C Language

Which of the following is not a valid C variable name?

• myVar

• 2var

• _myVar

• var_2

What will be the output of the following code?

int x = 5;

printf("%d", x++);

printf("%d", ++x);

• 56

• 65

• 67

• 76

Which statement is used to terminate the loop in C?

• end

• finish

• break

• terminate

What will be the output of the following code?

int a = 5;

int b = 2;

printf("%d", a / b);

• 2.5

• 2

• 2.0

• 3

Which header file should be included to use functions like printf() and scanf() in C?

• stdio.h

• math.h

• stdlib.h

• conio.h

What is the result of the expression sizeof(int) in C on a typical 32-bit system?

• 2

• 4

• 8

• Depends on the compiler

Which symbol is used to denote a single-line comment in C?

• //

• /* */

• --

• %%

Which of the following is not a valid data type in C?

• double

• real

• char

• float

What does the scanf function do in C?

• Prints formatted output to the screen

• Reads formatted input from the keyboard

• Prints formatted output to a file

• Reads formatted input from a file

In C, which keyword is used to define a constant?

• define

• constant

• const

• var