Quiz2: Basics of C 1

What is the correct value to return to the operating system upon the successful completion of a program?

• -1

• 1

• 0

• Programs do not return a value

What is the only function all C programs must contain?

• start()

• system()

• main()

• program()

What punctuation ends most lines of C code?

• .

• ;

• :

• '

Which of the following is a correct comment?

• */Comments */

• ** Comment **

• /* Comment */

• { Comment }

Which of the following is not a correct variable type?

• float

• real

• int

• double

What will be the output of the C program?

#include<stdio.h>

int main()

{

int 1_one = 25;

printf("%d",1_one);

return 0;

}

• 2

• 25

• 1

• Compilation Error

A variable is a symbol that represents

• A number

• A string

• A storage location in the computer's memory

• Nothing

You must declare a variable before assigning a value to it

• True

• False

What will be the output of the C program?

#include<stdio.h>

int main()

{

int a = 5;

int b = 20;

a = b;

printf("a = %d\n",a);

printf("b = %d\n",b);

return 0;

}

• a = 20

  b = 20

• a = 5

  b = 20

• a = 5

  b = 5

• a = 20

  b = 5

The smallest unit of data in a computer is called:

• Nibble

• Byte

• Bit

• KB