Question

How to get size of struct in C

Answer 1

#include <stdio.h>

enum { buffer_size = 32 };

struct buffer {
    size_t size;
    char bufferX[buffer_size];
};

int main(void) {
    printf("%zu", sizeof(struct buffer));
}




/*
compile:

40

*/

 

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Answer 2

#include <stdio.h>
 
#define SIZE 32
 
typedef struct {
    size_t size;
    char bufferX[SIZE];
} buffer;
 
int main(void) {
    printf("%zu", sizeof(buffer));
}
 
 
 
 
/*
compile:
 
40
 
*/

 

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