NPTEL » Problem Solving Through Programming In C Week-4 Quiz Solution

 

Week 4 : Assignment 4

1 point

What is the purpose of the "if-else" statement in C?

 a) To execute a block of code repeatedly.

 b) To declare variables and constants.

 c) To test a condition and execute different code based on the result.

 d) To perform mathematical calculations.

1 point

What is the correct syntax for an "if-else" statement in C?

 a) if condition { statement1; statement2; } else { statement3; }

 b) if condition then { statement1; } else { statement2; }

 c) if (condition) { statement1; } else { statement2; }

 d) if condition then statement1; else statement2;

1 point

Which of the following is true about nested "if-else" statements?

 a) They are not allowed in C.

 b) The "else" part is mandatory for every "if" statement.

 c) They allow you to test multiple conditions and execute different blocks of code based on the results.

 d) Nested "if-else" statements are only allowed up to two levels deep.

1 point

What happens if there is no "else" part in an "if-else" statement?

 a) The program will not compile.

 b) The program will crash at runtime.

 c) If the condition is true, nothing happens; if the condition is false, the program crashes.

 d) If the condition is true, the program executes the code inside the "if" block; if the condition is false, nothing happens.

1 point

Which of the following operators can be used to combine multiple conditions in an "if" statement?

 a)    && (logical AND)

 b)    || (logical OR)

 c)    ! (logical NOT)

 d)    All of the above

1 point

 a) 2

 b) 3

 c) 4

 d) Compiler error

1 point

If multiple conditions are used in a single "if" statement then the testing of those conditions are done

 a) From Right to Left

 b) From Left to right

 c) Randomly

 d) None of the above

1 point

 a) Sum of the digits of a number

 b) The negative sum of the digits of a number

 c) The reverse of a number

 d) The same number is printed

1 point

 a) a=5, b=6, c=2;

 b) a=6, b=7, c=1;

 c) a=6, b=6,c=2;

 d) a=5, b=7, c=1;

1 point

 a) Choice is 1

 b) Choice other than 1

 c) Both (a) and (b)

 d) Syntax error