1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | /* vim: set tabstop=4 shiftwidth=4 fileencoding=utf-8 noexpandtab: */
#include <stdio.h>
#include <stdlib.h>
#define COFFEE_BRAND_NUM_BYTES 6
#pragma pack(push) // save the original data alignment
#pragma pack(1) // Set data alignment to 1 byte boundary
typedef struct {
char brand[COFFEE_BRAND_NUM_BYTES];
char grade;
int num_votes;
} Coffee;
#pragma pack(pop) // restore the previous pack setting
int main(int argc, char* argv[]) {
Coffee c1 = { .brand = "ABC01", .grade = 'A', .num_votes = 17 };
FILE* fp = fopen("coffee_brand.bin", "w");
fwrite(&c1, sizeof(c1), 1, fp);
/*
* size_t fwrite(const void *ptr, size_t size, size_t nmemb,
* FILE *stream);
*/
fclose(fp);
return EXIT_SUCCESS;
}
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