C Programming Quiz

What is the correct syntax to include a header file in C?

• #include "header.h"

• #include

• #include header.h

• Both a and b

Which of the following is the correct file extension for a C program?

• .cpp

• .java

• .c

• .py

What is the output of the following code? printf("Hello, World!");

• Hello, World!

• hello, world!

• Compile-time error

• Runtime error

Which function is used to print output to the screen in C?

• cin

• printf

• cout

• print

What is the default return type of the main() function in C?

• void

• int

• float

• char

Which of the following is a correct variable declaration in C?

• int number;

• float 1stnum;

• char *;

• double& num;

What is the size of the int data type in C (on most platforms)?

• 2 bytes

• 4 bytes

• 8 bytes

• Depends on the compiler

What is the correct format specifier for a floating-point number in printf?

• %d

• %f

• %c

• %s

Which of these is not a valid data type in C?

• double

• char

• string

• void

How do you declare a constant variable in C?

• constant int x;

• int x = constant;

• const int x;

• const x;