C | Loops & Control Structure | Question 2

C

#include <stdio.h>
#define PRINT(i, limit) do \\
                        { \\
                            if (i++ < limit) \\
                            { \\
                                printf(\"GeeksQuiz\\n\"); \\
                                continue; \\
                            } \\
                        }while(0);

int main()
{
    int i = 0;
    PRINT(i, 3);
    return 0;
}

How many times GeeksQuiz is printed in the above program ?

(A)

1

(B)

3

(C)

4

(D)

Compile-time error

Answer: (A)
Explanation:

If a macro needs to be expanded in multiple lines, it is the best practice to write those lines within do{ }while(0) to avoid macro side effects. After GeeksQuiz is printed once, the control reaches the while statement to check for the condition. Since, the condition is false, the loop gets terminated.

Quiz of this Question
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