The program below has a problem. Which statement correctly describes it? #include struct packet { char data[]; int length; }; int main(void) { printf("%zu\n", sizeof(struct packet)); return 0; }

A flexible array member must be the last member of the struct

Structures, Unions, Enums · Find the Error · Question 7

Error: flexible array member that is not the last member Answer, explanation & discussion

Question 7 Back to Exercise

The program below has a problem. Which statement correctly describes it?

main.c

#include <stdio.h>

struct packet {
    char data[];
    int length;
};

int main(void) {
    printf("%zu\n", sizeof(struct packet));
    return 0;
}

Correct Answer: Option B

The flexible array extends past the end of the struct, so nothing can follow it. Move it last: struct packet { int length; char data[]; };.

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