code. compile. run. debug. share.
#include <stdio.h>
int main()
{
struct {
char char_1;
double num_1;
int num_2;
char char_2;
} s1;
struct {
char char_1;
char char_2;
int num_2;
double num_1;
} s2;
struct __attribute__((packed, aligned(1))) {
char char_1;
char char_2;
int num_2;
double num_1;
} s3;
printf("Char: %ld\n", sizeof(char)); // 1 byte
printf("Int: %ld\n", sizeof(int)); // 4 bytes
printf("Double: %ld\n\n", sizeof(double)); // 8 bytes
printf("s1: %ld\n", sizeof(s1));
printf("s2: %ld\n", sizeof(s2));
printf("s3: %ld\n", sizeof(s3));
return 0;
}
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