话不多说,直接上代码!
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(int argc,char* argv[]){
int fd,fd1,fd2;
char bufs[20];
int len;
if(argc != 3){
printf("参数不对\n");
}else{
fd = open(argv[1],O_RDONLY|O_CREAT);
if(fd != -1){
fd1 = creat(argv[2],0775);
if(fd1 != -1){
fd2 = open(argv[2],O_WRONLY);
while((len = read(fd,bufs,20))>0){
write(fd2,bufs,len);
}
}else{
printf("创建文件失败\n");
}
}else{
printf("要复制的文件不存在\n");
}
}
return 0;
}