This post contains 21-30 questions of c program. It will helpful to solve c aptitude questions, c quiz , c objective type questions etc in interview.
21-30 Questions
Q1:
#include<stdio.h>
main()
{
const int i=4;
float j;
j = ++i;
printf("%d %f", i,++j);
}
Answer:
Compiler error
Q2:
main()
{
int i=5,j=6,z;
printf("%d",i+++j);
}
Answer:
11
Q3:
main()
{
int i =0;j=0;
if(i && j++)
printf("%d..%d",i++,j);
printf("%d..%d,i,j);
}
Answer:
0..0
Q4:
int i;
main(){
int t;
for ( t=4;scanf("%d",&i)-t;printf("%d\n",i))
printf("%d--",t--);
}
// If the inputs are 0,1,2,3 find the o/p
Answer:
4--0
3--1
2--2
Q5:
main(){
int a= 0;int b = 20;char x =1;char y =10;
if(a,b,x,y)
printf("hello");
}
Answer:
hello
Q6:
void main()
{
unsigned giveit=-1;
int gotit;
printf("%u ",++giveit);
printf("%u \n",gotit=--giveit);
}
Answer:
0 65535
Q7:
main()
{
float me = 1.1;
double you = 1.1;
if(me==you)
printf("I love U");
else
printf("I hate U");
}
Answer:
I hate U
Q8:
a<<1 is equivalent to ? a) multiplying by 2 b) dividing by 2 c) adding 2 d)none of the above Answer:
Q9:
The operation of a stair case switch best explains the a) or operation b) and operation c)exclusive nor operation d)exclusive or operation Answer:
Q10:
Which of the following is/are syntactically correct? a) for(); b) for(;); c) for(,); d) for(;;); Answer: