C coding questions with answer

C coding questions with answers and explanation

(q) What will be output of the following c code?

#include<stdio.h>

int main(){

long int a;

(float)a=6.5;

printf("%f",a);

return 0;

}

Output: error, L value required

Explanation:

After applying any operator in variable name it always give a value.

(Type): urinary type casting operator is not exception for this. It is similar to write

3456 = 5

It is invalid c statement. Because left side of assignment operator must be a variable not any constant.

(q) What will be output of the following c code?

#include<stdio.h>

int main(){

long int a,b=10;

++a=b++;

printf("%d  %d",a,b);

return 0;

}

Output: error, L value required

Explanation:

After applying any operator in variable name it always give a value.

(Type): urinary type casting operator is not exception for this. It is similar to write

3456=5

It is invalid c statement. Because left side of assignment operator must be a variable not any constant.