文件IO open

  1 #include <sys/types.h>
  2 #include <sys/stat.h>
  3 #include <fcntl.h>
  4 #include <stdio.h>
  5 
  6 int main(int argc,int** argv)
  7 {
  8         int fd;
  9         fd = open("./files/main.txt",O_WRONLY|O_CREAT|O_TRUNC,0666);
 10         if(fd < 0){
 11                 printf("open file err\n");
 12                 return 1;
 13         }
 14         printf("打开文件成功！");
 15         return 0;
 16 }