C | Input and Output | Question 5

Predict the output of the below program:

#include <stdio.h>

int main()
{
    printf("%c ", 5["GeeksQuiz"]);
    return 0;
}

(A) Compile-time error
(B) Runtime error
(C) Q
(D) s


Answer: (C)

Explanation: The crux of the program lies in the expression: 5[“GeeksQuiz”]
This expression is broken down by the compiler as: *(5 + “GeeksQuiz”). Adding 5 to the base address of the string increments the pointer(lets say a pointer was pointing to the start(G) of the string initially) to point to Q. Applying value-of operator gives the character at the location pointed to by the pointer i.e. Q.

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