100 MCQ on C Programming

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Question: 1

How many times CppBuzz.com is printed?

int main()
{
while(1)
{
    printf("CppBuzz.com");
}

return 0;
}

(A) 1 time
(B) Compilation Error
(C) Infinite times
(D) Runtime Error

Compiler
Level: Practitioner | Category: loops

Question: 2

What is output of below program?

int main()
{
int i,j,count;
count=0;
for(i=0; i<5; i++);
{ 
	for(j=0;j<5;j++);
	{
	    count++;
	}
}
printf("%d",count);
return 0;
}

(A) 55
(B) 54
(C) 1
(D) 0

Compiler
Level: Practitioner | Category: loops

Question: 3

What is output of below program?

int main()
{
  int i;
  for(i=0; i<5; i++);
  {
    printf("cppbuzz");
  }

  return 0;
}

(A) cppbuzz is printed 5 times
(B) Compilation Error
(C) cppbuzz is printed 1 times
(D) Nothing is printed

Compiler
Level: Practitioner | Category: loops

Question: 4

What is output of below program?

int main()
{
int i,j,k,count;
count=0;
for(i=0;i<5;i++)
{
   for(j=0;j<5;j++)
   {
      count++;
   }
}
printf("%d",count);
return 0;
}

(A) 5
(B) 10
(C) 25
(D) 50

Compiler
Level: Practitioner | Category: loops

Question: 5

What is output of the below program?
int main()
{
 int i,j;
 for(i = 0,j=0;i<5;i++)
 {
   printf("%d%d--",i,j);
 }
 return 0;
}

(A) 0--01--12--23--34--
(B) 00--10--20--30--40--
(C) Compilation Error
(D) 00--01--02--03--04--

Compiler
Level: Expert | Category: loops

Question: 6

What is output of the below program?

int main()
{
 int i;
 for(i=0; i<5; ++i++)
 {
   printf("Hello");
 }
 return 0;
}

(A) Hello is printed 5 times
(B) Compilation Error
(C) Hello is printed 2 times
(D) Hello is printed 3 times

Compiler
Level: Expert | Category: loops

Question: 7

What is the output of the below program?
int main()
{
 int i;

 for(i = 0,i<5,i++)
 {
   printf("Hello");
 }

 return 0;
}

(A) Hello is printed 5 times
(B) Compilation Error
(C) Runtime Error
(D) Hello is printed 4 times

Compiler
Level: Expert | Category: loops

Question: 8

What is output of below program?

int main()
{
 for(; ;);
 for(; ;);
    printf("Hello");
return 0;
}

(A) Compilation Error
(B) Runtime Error
(C) Nothing is printed
(D) Hello is printed infinite times

Compiler
Level: Expert | Category: loops

Question: 9

What is the output of the below program?

int main()
{
for(; ;)
for(; ;)
    printf("Hello..");

return 0;
}

(A) Compilation Error
(B) Runtime Error
(C) Hello is printed one time
(D) Hello is printed infinite times

Compiler
Level: Expert | Category: loops

Question: 10

How many loops are there in C

(A) 2
(B) 3
(C) 4
(D) 1

Compiler
Level: Beginner | Category: loops

Question: 11

When C Language was invented?

(A) 1970
(B) 1972
(C) 1978
(D) 1979

Compiler
Level: Beginner | Category: other

Question: 12

What is the meaning of below lines?
void sum (int, int);

(A) sum is function which takes int arguments
(B) sum is a function which takes two int arguments and returns void
(C) it will produce compilation error
(D) Can't comment

Compiler
Level: Practitioner | Category: function

Question: 13

The concept of two functions with same name is know as function overloading. Is it supported by C language?

(A) Yes
(B) No

Compiler
Level: Practitioner | Category: function

Question: 14

What is output of below code?

int main()
{
char name[]="Cppbuz";
int len;
int size;
len = strlen(name);
size = sizeof(name);
printf("%d,%d",len,size);
return 0;
}

(A) 6,6
(B) 6,7
(C) 7,7
(D) 0,0

Compiler
Level: Practitioner | Category: function

Question: 15

What is the following is invalid header file in C?

(A) math.h
(B) mathio.h
(C) string.h
(D) ctype.h

Compiler
Level: Practitioner | Category: function

Question: 16

Library function getch() belongs to which header file?

(A) stdio.h
(B) conio.h
(C) stdlib.h
(D) stdlibio.h

Compiler
Level: Beginner | Category: function

Question: 17

Library function pow() belongs to which header file?

(A) mathio.h
(B) math.h
(C) square.h
(D) stdio.h

Compiler
Level: Practitioner | Category: function

Question: 18

What is output of below program?
int main()
{
const int a = 10;
printf("%d",++a);
return 0;
}

(A) 11
(B) 10
(C) Compilation Error
(D) 0

Compiler
Level: Beginner | Category: operators

Question: 19

What is the storage class for variable A in below code?

int main()
{
int A;
A = 10;
printf("%d", A);
return 0;
}

(A) extern
(B) auto
(C) register
(D) static

Compiler
Level: Expert | Category: storgeclass

Question: 20

Can we declare function inside structure of C Programming?

(A) Yes
(B) No
(C) Depends on Compiler
(D) Yes but run time error

Compiler
Level: Expert | Category: structure

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