C | Loops & Control Structure | Question 16

What is the output of the following program?

#include <stdio.h>
int main()
{
    char check = 'a';
    switch (check)
    {
        case 'a' || 1: printf("Geeks ");

        case 'b' || 2: printf("Quiz ");
                    break;
        default: printf("GeeksQuiz");
    }
    return 0;
}

(A) Geeks
(B) Geeks Quiz
(C) Geeks Quiz GeeksQuiz
(D) Compile-time error


Answer: (D)

Explanation: An expression gets evaluated in a case label. Both the cases used are evaluated to 1(true). So compile-time error: duplicate case value is flashed as duplicated cases are not allowed.

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