顺便问下这个程序例子，可是哪出错了？？

Question

#include <stdio.h>
#include <stdlib.h>
#include <dir.h>
#define MAXDIR 30

char old_dir[MAXDIR];
char new_dir[MAXDIR];

int main(void)
{
if (getcurdir(0,old_dir))
{
perror("getcurdir()");
exit(1);
}
printf("Current directory is: //%s/n",old_dir);

if (chdir("//"))
{
perror("chdir()");
exit(1);
}

if (getcurdir(0,new_dir))
{
perror("getcurdir()");
exit(1);
}
printf("Current directory is now: //%s/n", new_dir);

printf("/nChanging back to orignal directory: //%s/n", old_dir);
if (chdir(old_dir))
{
perror("chdir()");
exit(1);
}

return 0;
}

Answer 1

函数名: chdir功 能: 改变工作目录用 法: int chdir(const char *path);程序例:#include <stdio.h>#include <stdlib.h>#include <dir.h>char old_dir[MAXDIR];char new_dir[MAXDIR];int main(void){if (getcurdir(0, old_dir)){perror("getcurdir()");exit(1);}printf("Current directory is: \\%s\n", old_dir);if (chdir("\\")){perror("chdir()");exit(1);}if (getcurdir(0, new_dir)){perror("getcurdir()");exit(1);}printf("Current directory is now: \\%s\n", new_dir);printf("\nChanging back to orignal directory: \\%s\n", old_dir);if (chdir(old_dir)){perror("chdir()");exit(1);}return 0;}函数名: getcurdir功 能: 取指定驱动器的当前目录用 法: int getcurdir(int drive, char *direc);程序例:#include <stdio.h>#include <stdlib.h>#include <dir.h>char *current_directory(char *path){strcpy(path, "X:\\"); /* fill string with form of response: X:\ */path[0] = 'A' + getdisk(); /* replace X with current drive letter */getcurdir(0, path+3); /* fill rest of string with current directory */return(path);}int main(void){char curdir[MAXPATH];current_directory(curdir);printf("The current directory is %s\n", curdir);return 0;}