{"id":12098,"date":"2019-12-13T16:08:11","date_gmt":"2019-12-13T10:38:11","guid":{"rendered":"https:\/\/kseebsolutions.guru\/?p=12098"},"modified":"2021-07-02T15:36:47","modified_gmt":"2021-07-02T10:06:47","slug":"1st-puc-computer-science-question-bank-chapter-10","status":"publish","type":"post","link":"https:\/\/kseebsolutions.guru\/1st-puc-computer-science-question-bank-chapter-10\/","title":{"rendered":"1st PUC Computer Science Question Bank Chapter 10 Control Statements"},"content":{"rendered":"

You can Download Chapter 10 Control Statements 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 10 Control Statements<\/h2>\n

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

Question 1.
\nWhat is a statement?
\nAnswer:
\nStatements are the instructions given to the computer to perform specific of actions. Action may be in the form of data movement, decision making, etc.<\/p>\n

Question 2.
\nWhat are control statements?
\nAnswer:
\nControl statements are elements in the program that can control and alter the sequence of flow of constructions in any program execution.<\/p>\n

Question 3.
\nWrite the classification of control statements.
\nAnswer:
\nThe control statements are classified as<\/p>\n

    \n
  1. Selection statements<\/li>\n
  2. Iterative statements and<\/li>\n
  3. Jump statements.<\/li>\n<\/ol>\n

    Question 4.
    \nWhat is meant by a compound statement?
    \nAnswer:
    \nA compound statement is a grouping of statements enclosed within a pair of braces ({ }), in which each individual statement ends with a semi-colon.<\/p>\n

    Question 5.
    \nWhat are selection statements?
    \nAnswer:
    \nThe selection statements are used to execute certain block of statements after evaluating the condition.<\/p>\n

    Question 6.
    \nWhat is a block?
    \nAnswer:
    \nA group of statements separated by semicolons and grouped together and enclosed within brackets marked with { } is called a block.<\/p>\n

    \"KSEEB<\/p>\n

    Question 7.
    \nWhat is the purpose of \u2018if\u2019 statement?
    \nAnswer:
    \nThe \u2018if\u2019 statement is used to decide on whether a statement or a block should be executed or not.<\/p>\n

    Question 8.
    \nWhat is the other name of \u2018if\u2019 statement?
    \nAnswer:
    \nThe other name of \u2018if\u2019 statement is one-way branching statement.<\/p>\n

    Question 9.
    \nGive the possible output of condition evaluation.
    \nAnswer:
    \nThe possible output of condition evaluation is either TRUE or FALSE.<\/p>\n

    Question 10.
    \nWhat is the numerical equivalent of TRUE or FALSE?
    \nAnswer:
    \nThe numerical equivalent of TRUE is 1 and FALSE is 0.<\/p>\n

    Question 11.
    \nWhat is the other name of \u2018if-else\u2019 statement?
    \nAnswer:
    \nThe other name of \u2018if-else\u2019 statement is two-way branching.<\/p>\n

    Question 12.
    \nWhen is \u2018if-else\u2019 statement used?
    \nAnswer:
    \n\u2018If else\u2019 statement is a conditional branching statement used to execute a set of codes when the condition is true, otherwise executes a different set of the codes in the \u201celse\u201d part.<\/p>\n

    Question 13.
    \nWhat is an \u2018if-else-if\u2019 statement?
    \nAnswer:
    \nThe \u2018if-else if\u2019 statement is an extension of the \u201cif-else\u201d conditional branching statement. When the expression in the \u201cif\u2019 condition is \u201cfalse\u201d another \u201cif-else\u201d construct is used to execute a set statement based on an expression.<\/p>\n

    Question 14.
    \nWhat is \u2018nested if\u2019?
    \nAnswer:
    \nAn if statement nestling inside another \u2018if\u2019 statement is termed as \u2018a nested if\u2019 statement.<\/p>\n

    Question 15.
    \nGive the name of multi-branch selection statement.
    \nAnswer:
    \nThe multi-branch selection statement is called as \u2018switch-case\u2019 statement.<\/p>\n

    \"KSEEB<\/p>\n

    Question 16.
    \nGive the purpose of the switch statement.
    \nAnswer:
    \nThe \u2018switch\u2019 statement is used in C++ for testing whether a variable is equal to any one of a set of values.<\/p>\n

    Question 17.
    \nDefine the term looping.
    \nAnswer:
    \nLooping means execution of a statement or block of statements repeatedly until the condition is true.<\/p>\n

    Question 18.
    \nWhy is \u2018while\u2019 loop called a pre-tested looping statement?
    \nAnswer:
    \nThe \u2018while\u2019 loop evaluates the condition in the beginning itself, to select a suitable statement for execution repeatedly. Therefore it is called a pre-tested looping statement.<\/p>\n

    Question 19.
    \nWhat is post-tested looping statement?
    \nAnswer:
    \nThe loop evaluates the condition at the end of the looping structure and selects a statement for execution repeatedly. Therefore it is called a post-tested looping statement.<\/p>\n

    Question 20.
    \nName the post-tested looping statement.
    \nAnswer:
    \nThe \u2018do-while\u2019 statement is a post-tested looping statement.<\/p>\n

    Question 21.
    \nWhich structure is called a fixed-execution looping statement?
    \nAnswer:
    \nThe \u2018for\u2019 looping statement is called a fixed-execution looping statement.<\/p>\n

    Question 22.
    \nWhen is \u2018for\u2019 used?
    \nAnswer:
    \nIf the programmer knows the exact number of repetitions to be carried out among the set of statements then \u2018for\u2019 conditional statement is used in a program.<\/p>\n

    Question 23.
    \nWhat is nesting of loop?
    \nAnswer:
    \nIf the loop appears inside the body of another loop it is called a nested loop.<\/p>\n

    Question 24.
    \nWhat is the purpose of \u2018break\u2019 statement?
    \nAnswer:
    \nThe \u2018break\u2019 statement can be used to terminate a repeated structure (loops) such as \u2018while\u2019, do-while \u2018and\u2019 \u2018for\u2019 and multi-branching statements like \u2018switch\u2019.<\/p>\n

    Question 25.
    \nWhat is the use of \u2018goto\u2019 statement?
    \nAnswer:
    \nThe \u2018goto\u2019 statement transfers\/jump control from one part of the program to some other part.<\/p>\n

    Question 26.
    \nWhat is the function of \u2018continue\u2019 statement?
    \nAnswer:
    \nThe \u2018continue\u2019 statement is used in loops and causes a program to skip the rest of the body of the loop.<\/p>\n

    \"KSEEB<\/p>\n

    Question 27.
    \nWhy is the \u2018exit() library\u2019 function used?
    \nAnswer:
    \nThe execution of a program can be stopped at any point with \u2018exit ( )\u2019 and a status code can be informed to the calling program.<\/p>\n

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

    Question 1.
    \nWhat are control statements? How are they classified?
    \nAnswer:
    \nControl statements are elements in the program that control the flow of program execution. Control statements are classified as,<\/p>\n

      \n
    1. Selection statements<\/li>\n
    2. Iterative statements<\/li>\n
    3. Jump statements<\/li>\n<\/ol>\n

      Question 2.
      \nWhat are selection statements? Give the different types of selection statements.
      \nAnswer:
      \nSelection statements are used to execute certain block of statements by evaluating the conditions.
      \nThe different selection statements are<\/p>\n

        \n
      1. \u2018if\u2019 statement<\/li>\n
      2. \u2018if-else\u2019 statement<\/li>\n
      3. \u2018if-else-if\u2019 (nested) statement<\/li>\n
      4. \u2018switch\u2019 statement<\/li>\n<\/ol>\n

        Question 3.
        \nGive the syntax of \u2018if\u2019 statement.
        \nAnswer:
        \nThe syntax of if statement is
        \nif (condition)
        \n{
        \nstatement 1;
        \nstatement 2;
        \nstatement n;
        \n}<\/p>\n

        \"KSEEB<\/p>\n

        Question 4.
        \nWrite the flowchart representation of \u2018if\u2019 statement.
        \nAnswer:
        \n\"1st<\/p>\n

        Question 5.
        \nWrite the syntax of \u2018if-else\u2019 statement.
        \nAnswer:
        \n\"1st<\/p>\n

        Question 6.
        \nWrite the flowchart representation of \u2018if-else\u2019 statement.
        \nAnswer:
        \n\"1st<\/p>\n

        Question 7.
        \nWrite the syntax of if-else-if statement.
        \nAnswer:
        \n\"1st<\/p>\n

        Question 8.
        \nWrite the flowchart representation of \u2018if-else-if\u2019 conditional structure.
        \nAnswer:
        \n\"1st<\/p>\n

        Question 9.
        \nWrite the syntax of\u2018switch-case\u2019 statement.
        \nAnswer:
        \n\"1st<\/p>\n

        Question 10.
        \nWrite the comparison between \u2018if-else\u2019 and \u2018switch-case\u2019 statement.
        \nAnswer:
        \nThe \u2018if-else\u2019 statements permit two-way branching, whereas \u2018switch\u2019 statement permits multiple branching.<\/p>\n

        Question 11.
        \nWrite the syntax of \u2018while\u2019 loop.
        \nAnswer:
        \nSyntax of \u2018while\u2019 loop:
        \nwhile(condition)
        \n{
        \nstatement(s);
        \n}<\/p>\n

        \"KSEEB<\/p>\n

        Question 12.
        \nWrite the syntax of \u2018do-while\u2019 loop.
        \nAnswer:
        \nSyntax of \u2018do-while\u2019 loop
        \ndo
        \n{
        \nstatements;
        \n} while (condition);<\/p>\n

        Question 13.
        \nWrite the flowchart of representation of while loop.
        \nAnswer:
        \n\"1st<\/p>\n

        Question 14.
        \nWrite the flowchart representation of \u2018do-while\u2019 loop.
        \nAnswer:
        \n\"1st<\/p>\n

        Question 15.
        \nGive the difference between \u2018break\u2019 and \u2018exit()\u2019 statements.
        \nAnswer:
        \nThe \u2018break\u2019 statement can be used to terminate a repeated structure (loops) such as \u2018while\u2019, do-while and for and multi-branching statements like \u2018switch\u2019.
        \nThe execution of a program can be stopped at any point with \u2018exit ( )\u2019.<\/p>\n

        Question 16.
        \nGive the difference between \u2018goto\u2019 statement and \u2018continue\u2019 statement.
        \nAnswer:
        \nThe \u2018goto\u2019 statement transfers\/jump control from one part of the program some other part. The \u2018continue\u2019 statement is used in loops and causes a program to skip the rest of the body of the loop.<\/p>\n

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

        Question 1.
        \nExplain the working of \u2018 if\u2019 statement and \u2018if-else\u2019 statement with examples.
        \nAnswer:
        \nExample for \u2018if\u2019 statement:
        \n\"1st
        \nResult:
        \nB is greater than A
        \nIn the above example the condition in the if statement returns a true value and so the text \u201cB is greater than A\u201d is displayed.
        \nExample for \u2018if else\u2019 statement:
        \n\"1st
        \nResult:
        \nB is greater than A.
        \nIn the above example, the \u201cif\u2019 condition is false so the code in the \u201celse\u201d part is executed.<\/p>\n

        \"KSEEB<\/p>\n

        Question 2.
        \nExplain the working of if-else if statement with a suitable example.
        \nAnswer:
        \nThe \u2018if-else if\u2019 statement is an extension of the \u201cif-else\u201d conditional branching statement. When the expression in the \u201cif\u2019 condition is \u201cfalse\u201d another \u201cif-else\u201d construct is used to execute a set of statements based on the expression.
        \nSyntax:
        \nif(expression)
        \n{ statements }
        \nelse if(expression)
        \n{ statements }
        \nelse if(expression)
        \n{ statements }
        \nExample: for \u2018if else if\u2019 statement
        \n\"1st
        \n\"1st
        \nResult:
        \nEnter your Percentage::60
        \nFirst Class
        \nIn the above example, the \u2018if else if\u2019 statement is used to check multiple conditions based on the percentage of marks got, as input. The user entered percentage as 60, then first condition evaluated and returned with false. This resulted in checking for second if condition and resulted in true which give the print \u201cfirst class\u201d.<\/p>\n

        Question 3.
        \nWrite a short note on \u2018switch-case\u2019 statement.
        \nAnswer:
        \nA \u2018switch\u2019 statement allows a variable to be tested for equality against a list of values. Each value is called a case, and the variable being switched on is checked for each case.
        \nSyntax:
        \nThe syntax for a switch statement:
        \nswitch(expression)
        \n{
        \ncase constant-expression : statement(s);
        \nbreak; \/\/optional
        \ncase constant-expression : statement(s);
        \nbreak; \/\/optional
        \ndefault\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 : statement(s);\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/Optional
        \n}
        \nThe following rules apply to a switch statement:<\/p>\n

          \n
        1. The expression used in a \u2018switch\u2019 statement must have an integer or enumerated type.<\/li>\n
        2. We can have any number of case statements within a \u2018switch\u2019. Each case is followed by the value to be compared to, and a colon.<\/li>\n
        3. The constant-expression for a case must be the same data type as the variable in the \u2018switch\u2019,
          \nand it must be a constant or a literal.<\/li>\n
        4. When the variable being switched on is equal to a case, the statements following that case will execute until a \u2018break\u2019 statement is reached.<\/li>\n
        5. When a \u2018break\u2019 statement is reached, the \u2018switch\u2019 terminates, and the flow of control jumps to the next line following the \u2018 switch \u2019 statement.<\/li>\n
        6. Not every case needs to contain a break. If no break appears, the flow of control will fall through to subsequent cases until a \u2018break\u2019 is reached.<\/li>\n
        7. If no conditions match, then the code under the default statement is executed.<\/li>\n
        8. The default case is used for performing a task when none of the cases is \u2018true\u2019.<\/li>\n
        9. No break is needed in the default case.<\/li>\n<\/ol>\n

          \"KSEEB<\/p>\n

          Question 4.
          \nExplain \u2018switch-case\u2019 statement with a suitable program example.
          \nAnswer:
          \n\u2018 Switch\u2019 statement compares the value of an expression against a list of integers or character constants. The list of constants are listed using the \u201ccase\u201d statement along with a \u201cbreak\u201d statement to end the execution.
          \nExample:
          \n\"1st
          \n\"1st
          \nResult:
          \nEnter the day of the week between 1-7::7
          \nSunday
          \nIn the above Control Structure example, the \u201cswitch\u201d statement is used to find the day of the week from the integer input got from the user. The value present in the day is compared for equality with constants written in the word case. Since no equality is achieved in the above example (from 1 to 6), when 7 is entered default is selected and gives \u201cSunday\u201d as a result.<\/p>\n

          Question 5.
          \nExplain \u2018while\u2019 loop structure with an example.
          \nAnswer:
          \nA \u2018while\u2019 loop statement repeatedly executes a statement or sequence of statements written in the flower brackets as long as a given condition returns the value \u2018true\u2019.
          \nSyntax:
          \nThe syntax of a \u2018while\u2019 loop in C++ is:
          \nwhile(condition)
          \n{
          \nstatement (s) ;
          \n}
          \nHere the condition may be any expression, and for true is any non zero value. The loop iterates while the condition is true. When the condition becomes false, program control passes to the line immediately following the loop. During the first attempt, when the condition is tested and the result is false, the loop body will be skipped and the first statement after the \u2018while\u2019 loop will be executed.
          \nExample:
          \n\"1st
          \nWhen the above code is executed, it produces the following result:
          \nvalue of a: 10
          \nvalue of a: 11
          \nvalue of a: 12
          \nvalue of a: 13
          \nvalue of a: 14<\/p>\n

          \"KSEEB<\/p>\n

          Question 6.
          \nExplain the working of \u2018for\u2019 loop structure.
          \nAnswer:
          \nA \u2018for\u2019 loop is a repetition control structure, that allows you to efficiently write a loop that needs to execute a specific number of times.
          \nSyntax:
          \nThe syntax of a \u2018for\u2019 loop in C++ is:
          \nfor (initialization; condition; increment\/decrement)
          \n{
          \nstatement(s);
          \n}
          \nThe working of a \u2018for\u2019 loop:<\/p>\n

            \n
          1. The initialization step is executed first, and only once in the beginning. It is used to declare and initialize loop control variables.<\/li>\n
          2. Next, the condition is evaluated. If it is true, the body of the loop is executed. If it is false, the body of the loop does not execute and the flow of control jumps to the next statement just after the \u2018for\u2019 loop.<\/li>\n
          3. After the body of the \u2018for\u2019 loop executes, the flow of control jumps back up to the increment\/ decrement statement and update any \u2018loop\u2019 control variables.<\/li>\n
          4. Then the condition is evaluated again. If it is true, the \u2018 loop\u2019 executes and the process repeats itself (body of \u2018loop\u2019, then increment step, and then again condition). After the condition becomes false, the \u2018for\u2019 loop terminates.<\/li>\n<\/ol>\n

            Example:
            \n\"1st
            \nWhen the above code is compiled and executed, it produces following result:
            \nvalue of a: 10
            \nvalue of a: 11
            \nvalue of a: 12
            \nvalue of a: 13
            \nvalue of a: 14
            \nvalue of a: 15<\/p>\n","protected":false},"excerpt":{"rendered":"

            You can Download Chapter 10 Control Statements 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 10 Control Statements 1st PUC Computer Science Control Statements One Mark …<\/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\/12098"}],"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=12098"}],"version-history":[{"count":0,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/posts\/12098\/revisions"}],"wp:attachment":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/media?parent=12098"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/categories?post=12098"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/tags?post=12098"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}