{"id":12031,"date":"2019-12-13T12:32:25","date_gmt":"2019-12-13T07:02:25","guid":{"rendered":"https:\/\/kseebsolutions.guru\/?p=12031"},"modified":"2021-07-02T15:36:50","modified_gmt":"2021-07-02T10:06:50","slug":"1st-puc-computer-science-question-bank-chapter-12","status":"publish","type":"post","link":"https:\/\/kseebsolutions.guru\/1st-puc-computer-science-question-bank-chapter-12\/","title":{"rendered":"1st PUC Computer Science Question Bank Chapter 12 Functions"},"content":{"rendered":"

You can Download Chapter 12 Functions Questions and Answers, Notes, 1st PUC Computer Science Question Bank with Answers<\/a> Karnataka State Board Solutions help you to revise complete Syllabus and score more marks in your examinations.<\/p>\n

Karnataka 1st PUC Computer Science Question Bank Chapter 12 Functions (Library Functions)<\/h2>\n

1st PUC Computer Science Functions One Mark Questions and Answers<\/h3>\n

Question 1.
\nDefine function.
\nAnswer:
\nA FUNCTION is a self-contained block of statements that perform a specific task with a name given to it.<\/p>\n

Question 2.
\nHow are functions classified?
\nAnswer:
\nFunctions are classified as,<\/p>\n

    \n
  • Library functions pre-defined functions and<\/li>\n
  • User-defined functions.<\/li>\n<\/ul>\n

    Question 3.
    \nWhat is a predefined function in C++?
    \nAnswer:
    \nPredefined functions are functions that are built into C++ language to perform some standard operations that are stand-alone and used for general purposes.<\/p>\n

    Question 4.
    \nWhat is a header file?
    \nAnswer:
    \nA header file is a file containing all the library function definitions that can be used in a program.<\/p>\n

    Question 5.
    \nAnswer:
    \nList any two basic types of standard library functions.<\/p>\n

      \n
    1. I\/O Functions and<\/li>\n
    2. Mathematical Functions – math.h<\/li>\n<\/ol>\n

      Question 6.
      \nWrite the names of any two C++ header files.
      \nAnswer:
      \nTwo header files are<\/p>\n

        \n
      1. iostream.h and<\/li>\n
      2. iomanip.h<\/li>\n<\/ol>\n

        Question 7.
        \nList the names of any two functions of iostream.h header file.
        \nAnswer:
        \nThe two functions of iostream.h files are<\/p>\n

          \n
        • cin and<\/li>\n
        • cout<\/li>\n<\/ul>\n

          Question 8.
          \nList any two functions of iomanip.h header file.
          \nAnswer:
          \nTwo functions of iomanip.h files are<\/p>\n

            \n
          1. end1 and<\/li>\n
          2. setw.<\/li>\n<\/ol>\n

            \"KSEEB<\/p>\n

            Question 9.
            \nWhat is the main function of iostream.h header file?
            \nAnswer:
            \nThe iostream.h header file contains C++ streams and i\/o routine functions. It is a header file which we include in our programs to perform basic input output operations. We use \u2018cin\u2019 in programs to get input from the keyboard. To use \u2018cin\u2019 and \u2018cout\u2019, we must add iostream. h header file.<\/p>\n

            Question 10.
            \nWhat is the main function of iomanip.h header file?
            \nAnswer:
            \nThe iomanip.h header file contains various functions and macros for i\/o manipulations for creating or parameterized manipulations.<\/p>\n

            Question 11.
            \nWrite any two math.h library functions.
            \nAnswer:
            \nsqrt() and pow() are two libarary functions of math.h.<\/p>\n

            Question 12.
            \nWrite any two functions of ctype.h?
            \nAnswer:
            \nTwo functions of ctype.h are isalpha() and isdigit().<\/p>\n

            Question 13.
            \nWrite any two library functions of stdlib.h.
            \nAnswer:
            \nTwo functions of stdlib.h are atoi() and itoa().<\/p>\n

            Question 14.
            \nWrite any two library functions of string.h.
            \nAnswer:
            \nTwo functions of string.h are strlen() and strcpy().<\/p>\n

            Question 15.
            \nMention the function which can convert upper case letters to lower case letters.
            \nAnswer:
            \nThe function tolower() converts an uppercase letter to a lower case letter.<\/p>\n

            Question 16.
            \nGive the name of ctype.h member function which can convert lower case letter to uppercase letters.
            \nAnswer:
            \nThe function toupper() converts lower case letters to upper case letters.<\/p>\n

            \"KSEEB<\/p>\n

            Question 17.
            \nWhat is the output of ispunct (\u2018@\u2019)?
            \nAnswer:
            \nThe output of ispunct (\u2018@\u2019) is 1 means it is TRUE.<\/p>\n

            Question 18.
            \nWhat is the output of toascii (\u2018A\u2019)?
            \nAnswer:
            \nThe output of toascii (\u2018A\u2019) is 65.<\/p>\n

            Question 19.
            \nWhat is the output of isdigit (\u20183\u2019)?
            \nAnswer:
            \nThe output of isdigit (\u20183\u2019) is 1 means it is TRUE.<\/p>\n

            Question 20.
            \nWhat is the use of isalnum() function?
            \nAnswer:
            \nIt returns True if the argument is a digit from 0 through 9 or an alphabetic character (either uppercase or lowercase) otherwise returns False.<\/p>\n

            \"KSEEB<\/p>\n

            Question 21.
            \nWhat is the output of sqrt(25)?
            \nAnswer:
            \nTheoutputofsqrt(25) is 5.<\/p>\n

            Question 22.
            \nWhat is the output of ceil(25.456) function?
            \nAnswer:
            \nThe ceil() function gives the smallest integer not less than the given value.<\/p>\n

            Question 23.
            \nWhat is the use of expO function?
            \nAnswer:
            \nexp() is a mathematical function that returns the natural logarithm base \u201ce\u201d raised to the argument\u2019s power.<\/p>\n

            Question 24.
            \nWhat is the function of cos()?
            \nAnswer:
            \ncos() is a mathematical function that returns the cosine value for the given radians.<\/p>\n

            Question 25.
            \nWhat is the function of pow()?
            \nAnswer:
            \npow() is a mathematical function that returns the \u201cbase\u201d value raised to the \u201cexp\u201d power.<\/p>\n

            Question 26.
            \nHow is pow() function used? Give an example.
            \nAnswer:
            \npow(2, 4) gives the result 16 as the output, ie. 2 raised to the power of 4.<\/p>\n

            Question 27.
            \nName the function that gives the square root of a number.
            \nAnswer:
            \nThe function sqrt() gives the square root of a number.<\/p>\n

            Question 28.
            \nWhen is mathematical function \u201cfabs()\u201d used in C++?
            \nAnswer:
            \nThe fabs() mathematical function is used to return the absolute value of the given argument.<\/p>\n

            Question 29.
            \nWhat is the function of sin()?
            \nAnswer:
            \nThe sin() is a mathematical function that returns sine value for the given argument represented in radians.<\/p>\n

            \"KSEEB<\/p>\n

            Question 30.
            \nDefine string.
            \nAnswer:
            \nThe term string is defined as a character array, terminated with a null character [\u2018\\0\u2019].<\/p>\n

            Question 31.
            \nWhat is null in string?
            \nAnswer:
            \nThe null in a string is the control character \u2018\\0\u2019 that indicates the end of the string.<\/p>\n

            Question 32.
            \nHow is a string declared?
            \nAnswer:
            \nThe declaration of string is char arrayname[size];<\/p>\n

            Question 33.
            \nGive one example of string initialization.
            \nAnswer:
            \nchar name[50]=\u201d Bharath\u201d;<\/p>\n

            Question 34.
            \nName the function used for string input.
            \nAnswer:
            \nThe function getline() is used to read a string.<\/p>\n

            Question 35.
            \nHow is input terminated in getline()?
            \nAnswer:
            \nThe input gets terminated when a newline character is entered or when the length of the entered characters is equal to the size of the character array.<\/p>\n

            Question 36.
            \nName the function used for string output.
            \nAnswer:
            \nThe function write() is used for string output.<\/p>\n

            \"KSEEB<\/p>\n

            Question 37.
            \nWhat is a null string?
            \nAnswer:
            \nWhen the length of the string is 0 it is called a null string.<\/p>\n

            Question 38.
            \nName the function used to find the length of a string.
            \nAnswer:
            \nThe strlen() function is used to find the length of a string.<\/p>\n

            Question 39.
            \nName the function used to combine the two strings.
            \nAnswer:
            \nThe strcat() function is used to combine the two strings.<\/p>\n

            Question 40.
            \nGive the function of strcpy().
            \nAnswer:
            \nThe strcpy() is used to copy a string into another string.<\/p>\n

            Question 41.
            \nName the function used to compare two strings.
            \nAnswer:
            \nThe function strcmp() is used to compare two strings.<\/p>\n

            Question 42.
            \nWhat is the function of strrev()?
            \nAnswer:
            \nThe strrev() function is used to reverse the string.<\/p>\n

            Question 43.
            \nGive the function of get()?
            \nAnswer:
            \nIt reads a single character from the stream.<\/p>\n

            Question 44.
            \nGive the function of put()?
            \nAnswer:
            \nIt writes a single character into the stream.<\/p>\n

            \"KSEEB<\/p>\n

            Question 45.
            \nGive the usage of get().
            \nAnswer:
            \nchar c;
            \nc = cin.get();<\/p>\n

            Question 46.
            \nName any one function to generate a pseudo-random number.
            \nAnswer:
            \nRand() is the function used to generate a pseudo-random number.<\/p>\n

            1st PUC Computer Science Functions Two\/Three Marks Questions and Answers<\/h3>\n

            Question 1.
            \nWhat are predefined functions? Name any two predefined functions.
            \nAnswer:
            \nPredefined functions are functions that are built into the C++ Language to perform some standard operations. The functions that are stand-alone are used for general purposes and that are not dependant on any classes are stored in the Standard Function Library.
            \nList of basic types of standard library functions:<\/p>\n

              \n
            1. I\/O Functions.<\/li>\n
            2. String and Character Functions<\/li>\n<\/ol>\n

              Question 2.
              \nMention any two useful properties of functions.
              \nAnswer:<\/p>\n

                \n
              1. It performs some well-defined task, which will be useful to other parts of the program.<\/li>\n
              2. It might be useful to other programs as well; that is, we might be able to reuse it (and without having to rewrite it).<\/li>\n<\/ol>\n

                Question 3.
                \nExplain any two advantages of functions.
                \nAnswer:
                \n1. Modularity:
                \nFunctions facilitate the modular programming technique, i.e., functions can be used to divide a large bulky program into functionally independent modules or subprograms that can be tested, debugged and maintained independently.<\/p>\n

                2. Universal use:
                \nUser-defined functions can be made part of a library, in turn, which facilitates the usage of that function across other \u2018C\u2019 programs.<\/p>\n

                \"KSEEB<\/p>\n

                Question 4.
                \nGive the usage of the mathematical function pow().
                \nAnswer:
                \npow() is a mathematical function that returns the \u201cbase\u201d value raised to the \u201cexp\u201d power.
                \nSyntax to find power of a number:
                \nfloat pow (float base, float exp);<\/p>\n

                Question 5.
                \nGive the usage of the mathematical function sqrt()
                \nAnswer:
                \nsqrt() is a mathematical function that returns the square root of the given \u201cnum\u201d value.
                \nSyntax to find the Square root:
                \nfloat sqrt( float num);<\/p>\n

                Question 6.
                \nGive the usage of the mathematical function exp().
                \nAnswer:
                \nexp() is a mathematical function that returns the natural logarithm base \u201ce\u201d raised to the argument\u2019s power.
                \nSyntax to find exponential value:
                \nfloat exp( float num);<\/p>\n

                Question 7.
                \nWhat are character functions? Name the header file for character functions.
                \nAnswer:
                \nCharacter functions are functions used for the process of a character enclosed in single quotes. The ctype.h is the header for character functions.<\/p>\n

                Question 8.
                \nName the two types of character functions.
                \nAnswer:
                \nCharacter functions are classified as<\/p>\n

                  \n
                1. Classification functions and<\/li>\n
                2. Conversion functions<\/li>\n<\/ol>\n

                  Question 9.
                  \nGive the difference between classification function and conversion function.
                  \nAnswer:
                  \n1. Classification function:
                  \nname begins with the prefix is, and is used to determine the type of character.<\/p>\n

                  2. Conversion function:
                  \nname begins with the prefix to and is used to determine the type of character.<\/p>\n

                  Question 10.
                  \nGive the usage of isalpha().
                  \nAnswer:
                  \nIt returns a non-zero value if the argument is a A-Z or a-z letters. Otherwise it neutrons a zero.
                  \nFor example, isalpha(\u2018a\u2019) output: true-neutrons 1
                  \nisalpha(\u20185\u2019) output: false- neutrons 0.<\/p>\n

                  \"KSEEB<\/p>\n

                  Question 11.
                  \nCompare islower() and isupper() character functions with examples.
                  \nAnswer:
                  \nislower(\u2018a\u2019) output: true islower(\u2018A\u2019) output: false
                  \nisupper(\u2018a\u2019) output: false isupper(\u2018A\u2019) output: false<\/p>\n

                  Question 12.
                  \nCompare strcmp() and strcmpi().
                  \nAnswer:
                  \nstrcmp(\u201cPUC\u201d, \u201cPUC\u201d) output: negative integer. – This is case sensitive and compare two strings.
                  \nStrcmpi(\u201cPUC\u201d, \u201cPUC\u201d) output: 0 (zero). – This is not case sensitive and strings<\/p>\n

                  Question 13.
                  \nWhat are the different outputs generated by strcmp() function?
                  \nAnswer:
                  \nThe strcmp() function generates any one of the following outputs. Zero if both the strings are the same,<\/p>\n

                    \n
                  1. Positive integer if the first string is greater than the second string.<\/li>\n
                  2. Negative integer if the first string is lesser than the second string.<\/li>\n<\/ol>\n

                    \"KSEEB<\/p>\n

                    Question 14.
                    \nGive the usage of strcat() function with an example.
                    \nAnswer:
                    \nStrcat() character function is used to combine two strings.
                    \nThe syntax is strcat(target_string, source_string);<\/p>\n

                    Question 15.
                    \nGive the usage of any two functions that generate pseudo-random numbers.
                    \nAnswer:
                    \nint rand (void);
                    \nReturns a pseudo-random integral number in the range between 0 and RAND_MAX.
                    \nvoid srand (unsigned int seed);
                    \nThe pseudo-random number generator is initialized using the argument passed as seed.<\/p>\n

                    1st PUC Computer Science Functions Five Marks Questions and Answers<\/h3>\n

                    Question 1.
                    \nExplain any five functions of <math.h> header.
                    \nAnswer:
                    \n1. a cos() function:
                    \nIt is a mathematical function that returns the arc cosine value for the given argument. The argument value must be in the range -1 to 1, otherwise, a domain error is triggered.
                    \nSyntax : float acos ( float arg);<\/p>\n

                    2. cos() function:
                    \nIt is a mathematical function that returns the cosine Value for the given radians.
                    \nSyntax: float cos( float arg );<\/p>\n

                    3. ceil() function:
                    \nIt is a mathematical function that returns the smallest integer value that is not less than the specified number. In other words, it returns the Round-Up value of a given number.
                    \nSyntax: float ceil( float num);<\/p>\n

                    4. exp() function:
                    \nIt is a mathematical function that returns the natural logarithm base \u201ce\u201d raised to the power equal to the argument.
                    \nSyntax: float exp( float num);<\/p>\n

                    5. sqrt() function:
                    \nIt is a mathematical function that returns the square root of the given \u201cnum\u201d value.
                    \nSyntax: float sqrt( float num);<\/p>\n

                    \"KSEEB<\/p>\n

                    Question 2.
                    \nWrite a short note on character functions.
                    \nAnswer:
                    \n1. isalpha():
                    \nReturns a non-zero value if the argument is a A-Z or a-z letters.
                    \nFor example, isalpha(\u2018a\u2019) output: 1 means true isalpha(\u20185\u2019) output: 0 means false<\/p>\n

                    2. islower():
                    \nReturns a non-zero value if argument is a small case alphabet.
                    \nFor example, islower(\u2018a\u2019) output: 1 islower(\u2018A\u2019) output: 0<\/p>\n

                    3. isupper():
                    \nit is a character function that returns a non-zero value if argument is an upper case alphabet.
                    \nFor example, isupper(\u2018a\u2019) output: 0 isupper(\u2018A\u2019) output: 1<\/p>\n

                    4. tolower( ):
                    \nIt converts the capital alphabet character to lower case.
                    \nFor example, tolower(\u2018A\u2019) output: a<\/p>\n

                    5. toupper( ):
                    \nIt converts the lower case alphabet character to upper case.
                    \nFor example, toupper(\u2018a\u2019) output: A<\/p>\n

                    Question 3.
                    \nWrite a note on string handling functions.
                    \nAnswer:
                    \n1. strlen( ) function:
                    \nIt calculates the length of the given string and returns the number of characters in a string. The length does not include the NULL character.
                    \nSyntax: integer variable = strlen(string);<\/p>\n

                    2. Strcpy( ) function:
                    \nIt copies the content of one string to another. The strcpy( ) function works almost like a string assignment operator.
                    \nSyntax: strcpy(<stringl>,<string2>);
                    \nWhen strcpy( ) function is executed, it copies string2 to string1, String2 can be a character array or a character constant.<\/p>\n

                    3. strcat() function:
                    \nIt adds the characters of one string to the end of another string. It is used to join two strings together.
                    \nSyntax: strcat(string1, string2);
                    \nThe contents of string2 are added attend in string 1, where string 1 is the target string and string 2 is the source string.<\/p>\n

                    4. strrev() function:
                    \nIt reverses the characters in a string.
                    \nSyntax: strrev(string);
                    \neg: strrev(\u201cABCD\u201d);
                    \nOutput: DCBA<\/p>\n

                    5. strlwr() function:
                    \nconverts all characters in a string to lower (small letters) case.
                    \nSyntax: strlwr(string);
                    \neg: strlwr(\u201cBHARATH\u201d)
                    \nOutput: bharath.<\/p>\n

                    Question 4.
                    \nExplain getline() function with a suitable example.
                    \nAnswer:
                    \ngetline() function is used to read the whole line of text that ends with a newline character.
                    \nHere getline() function is invoked for reading character input into the variable line. When we type \\n, the reading is terminated or size-1 characters are read. The newline is accepted but converted to null character.
                    \n#include <iostream>
                    \nint main()
                    \n{
                    \nchar city [50];
                    \ncout<< \u201cCity Name :\u201c;
                    \ncin.getline(city, 50);
                    \ncout<< \u201cCity Name : \u201c<< city << end1;
                    \nreturn 0;
                    \n}<\/p>\n

                    \"KSEEB<\/p>\n

                    Question 5.
                    \nWrite a note on manipulators.
                    \nAnswer:
                    \nManipulator functions: Manipulator functions are special stream functions that change certain characteristics of the input and output. They are useful in the formatting of input and output streams.
                    \nFollowing are a few standard manipulators normally used in the stream classes:<\/p>\n

                      \n
                    1. end1<\/li>\n
                    2. setbase<\/li>\n
                    3. setw<\/li>\n
                    4. setfill<\/li>\n
                    5. setprecision<\/li>\n<\/ol>\n

                      1. end1:
                      \nThe end1 is an output manipulator to generate a carriage return or line feed character. The end1 may be used several times in a C++ statement.
                      \nFor example,
                      \ncout<< \u201c a \u201c << end1 << \u201cb\u201d << end1;
                      \nA program to display a message on two lines using the end1 manipulator and the corresponding output is given below.<\/p>\n

                      2. setbase():
                      \nThe setbase() manipulator is used to convert the base of one numeric value into another base. Dec, hex, and oct are the common base converters in C++.<\/p>\n

                      3.\u00a0 setw():
                      \nThe setw ( ) stands for the set width. The setw ( ) manipulator is used to specify the minimum number of character positions on the output field a variable will consume. The general format of the setw manipulator function is setw( int w ).<\/p>\n

                      4. setfill():
                      \nThe setfill ( ) manipulator function is used to specify a different character to fill the unused field width of the value.<\/p>\n

                      The general syntax of the setfill () manipulator is setfill( char f)<\/p>\n

                      which changes the fill character to f. The default fill character is a space.<\/p>\n

                      5.\u00a0 setprccision():
                      \nThe setprecision () is used to control the number of digits of an output stream display of a floating-point value.
                      \nThe general syntax of the setprecision () manipulator is
                      \nsetprecision (int p)
                      \nwhich sets the precision for floating-point insertions to p. The default precision is 6.<\/p>\n","protected":false},"excerpt":{"rendered":"

                      You can Download Chapter 12 Functions Questions and Answers, Notes, 1st PUC Computer Science Question Bank with Answers Karnataka State Board Solutions help you to revise complete Syllabus and score more marks in your examinations. Karnataka 1st PUC Computer Science Question Bank Chapter 12 Functions (Library Functions) 1st PUC Computer Science Functions One Mark Questions …<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[81],"tags":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/posts\/12031"}],"collection":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/comments?post=12031"}],"version-history":[{"count":0,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/posts\/12031\/revisions"}],"wp:attachment":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/media?parent=12031"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/categories?post=12031"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/tags?post=12031"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}