GATE Questions

1)Program:

main()

{

int a=2,b=3;

printf("%d",++(a*b+1);

}

Output: compile time error

Explanation : -- / ++(expression) will not allow 

2)Program:

main()

{

int x=6;

if(x-6)

printf("welcome");

printf("%d",x);

else

printf("learner");

}

Output: error

Explanation : there is no braces for if condition 

3)Program:

main()

{

int x=6;

if(x-6)

   {

     printf("welcome");

     printf("%d",x);

   }

else

printf("learner");

}

Output: learner

Explanation : if (0) means condition false so it prints learner 

4)Program:

main()

{

float a=3.14;

printf("%f",a%2);

}

Output: compile time error

Explanation :   float will not support % operator 

 

5)Program:

int initializer (void)

{

 return 50;

}

int main()

{

 static int i=initializer();

 printf("value of i =%d",i);

 getchar();

 return 0;

} 

Output: compile time error

Explanation :   In c static variables can only be initialized using constant literals