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C | Loops & Control Structure | Question 7

  • Difficulty Level : Basic
  • Last Updated : 15 Jan, 2013


Take a step-up from those "Hello World" programs. Learn to implement data structures like Heap, Stacks, Linked List and many more! Check out our Data Structures in C course to start learning today.



#include <stdio.h>
int i;
int main()
{
    if (i);
    else
        printf("√člse");
    return 0;
}

What is correct about the above program?
(A) if block is executed.
(B) else block is executed.
(C) It is unpredictable as i is not initialized.
(D) Error: misplaced else


Answer: (B)

Explanation: Since i is defined globally, it is initialized with default value 0. The Else block is executed as the expression within if evaluates to FALSE. Please note that the empty block is equivalent to a semi-colon(;). So the statements if (i); and if (i) {} are equivalent.

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