c_cpp 如何将二进制数据附加到C中的文件

Posted 2021-05-14

static int 
data_to_file(unsigned char* data, size_t data_len, const char* path) {
	FILE* fp;
	fp = fopen(path, "ab");
	if(fp == NULL) {
		fprintf(stderr, "IO Error: Cannot open file at %s, exiting.\n", path);
		exit(1);
	}
	fwrite(data, sizeof(unsigned char), data_len, fp);
	fclose(fp);
	return 1;
}