Linux文件编程demo10写结构体数组到文件.c

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于 2024-12-09 10:31:15 发布

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分类专栏： Linux系统编程文章标签： linux c语言文件编程 Linux系统编程

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#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
struct Test
{
	int a;
	char b;
	
	
};
int main()
{
	int fd;
	struct Test data[2]={{100,'a'},{200,'b'}};
	struct Test data2[2];
	fd = open("./file1",O_RDWR);
	int n_write = write(fd,&data,sizeof(struct Test)*2);
	lseek(fd,0,SEEK_SET);
	
	int n_read = read(fd,&data2,sizeof(struct Test)*2);
	
	printf("read = %d ,%c\n",data2[0].a,data2[0].b);
	printf("read = %d ,%c\n",data2[1].a,data2[1].b);
	
	close(fd);
	
	
	return;
}```