copy.c

来自「C语言复制功能程序的源码」· C语言 代码 · 共 46 行

/这是C语言复制程序的源码，是提升C语言项目工作能力的好方法/
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#define MAXSIZE 1024
char buf[MAXSIZE];
int main(int argc, char *argv[])
{
	int fdest;
	int fd;
	int rep;
	int file;
	if (argc != 3)
		{
			printf("the")
		}
	fd = open(argv[2],O_RDONLY);
	if ((fd < 0 || fd == 0))
	{
		printf("open error or open empty\n");
		exit (1);
	}
	rep = read(fd, buf, 50);
	if ((rep < 0) || (rep == 0))
	{	printf("read error or read empty\n");
		exit (1);
	}
	fdest = open (argv[1], O_CREAT | O_WRONLY);
	if ((fdest < 0) || (fdest == 0))
	{	
		printf("the file is not exist\n");
		exit (1);
	}	
	file = write (fdest, buf, 50);
	if ((file < 0))
	{	printf("operate is not sucess\n");
		exit (1);
	}
	printf("%s\n",buf);
}