C Programming Quiz

Which of the following is a valid declaration in C?

• int 2num;

• float rate = 5.5.5;

• char letter = 'A';

• int long = 10;

Which format specifier is used for printing unsigned int in C?

• %d

• %c

• %f

• %u

What will sizeof('A') return in C?

• 2

• 1

• 4

• 8

Which loop is guaranteed to execute at least once?

• for loop

• do-while loop

• while loop

• goto

What is the output of printf("%d", 5 + 'A');?

• 5

• ASCII of 'A'

• ASCII of 'A' + 5

• Error

What is a correct way to declare a pointer to an integer?

• int ptr;

• int *ptr;

• ptr int;

• int &ptr;

Which operator is used to access the value at the address pointed by a pointer?

• &

• ->

• *

• @

Which of the following data types takes up the most memory (on 32-bit systems)?

• int

• char

• float

• double

Which header file is needed to use malloc() in C?

• stdlib.h

• stdio.h

• string.h

• malloc.h

What does the continue keyword do in loops?

• Exits the loop

• Skips the next iteration

• Terminates the program

• Jumps to the start of the program