GATE Overflow Test Series | Mock GATE | Test 4 | Question: 26

Question

What is the output of the following program?

#include<stdio.h>
int main()
{
    int i=0;
    for(i++;i==1;i=2)
    printf("Inside loop ");
    printf("Outside loop");
    return 0;
}

• A. Inside loop Outside loop
• B. Outside loop
• C. Infinite times Inside loop
• D. Syntax error in for loop statement

Comments

https://en.wikipedia.org/wiki/For_loop#/media/File:For-loop-diagram.png

Answer 1

If we use the $++$ operator as prefix like$: ++var,$ the value of var is incremented by $1$ then, it returns the value.

If we use the $++$ operator as postfix like$: var++,$ the original value of var is returned first then, var is incremented by $1.$

The $--$ operator works in a similar way like the $++$ operator except it decreases the value by $1.$

Now, for first iteration, $i = 1$, condition satisfies and prints "Inside loop".

For second iteration the value of $i = 2,$ and condition does not satisfy and the loop exits.

Then "Outside loop" will be printed.

So, the correct answer is $(A).$