What is the output of the following C program on a 64-bit system? #include struct point { int x, y, z; }; int main(void) { struct point p = {.z = 3, .x = 1}; printf("%d %d %d\n", p.x, p.y, p.z); return 0; }

Structures, Unions, Enums · Predict the Output · Question 1

Struct designated initializers out of order – output Answer, explanation & discussion

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Question 1 Back to Exercise

What is the output of the following C program on a 64-bit system?

main.c

#include <stdio.h>

struct point {
    int x, y, z;
};

int main(void) {
    struct point p = {.z = 3, .x = 1};
    printf("%d %d %d\n", p.x, p.y, p.z);
    return 0;
}

A 1 0 3 Correct
B 3 1 0
C 1 garbage 3
D Compilation error

Correct Answer: Option A

Designated initializers can come in any order. Members that are not named – here y – are set to 0, as with any initializer.

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Struct designated initializers out of order – output Answer, explanation & discussion

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