下面是具體的C語言程式實現批次更改檔名：

#include<stdio.h>

#include<string.h>

#include<stdlib.h>

#include<dirent.h>

void change_str(char *str, char *a, char *b)

{

char *p, q[100] = {0};

p = strstr(str, a);

p += strlen(a);

strcpy(q, p);

*(p - strlen(a)) = 0;

strcat(str, b);

strcat(str, q);

}

int main()

{

const char dir[512] = "D:\\work\\工作\\三區\\work\\北京市_三區_有色冶金設計研究院\\北京市_三區_有色冶金設計研究院11號樓\\";

const a = "心_";

const b = "心";

char filename[512] = {0}, *p, name_temp[512] = {0};

char new_name[512] = {0}, old_name[512] = {0};

char tmp[512] = "COPY ";

char name_tmp[512] = {0};

DIR *directory_pointer;

struct dirent *entry;

strcpy(new_name, dir);

strcpy(old_name, dir);

if((directory_pointer=opendir(dir))==NULL)

printf( "Error opening \n ");

else

{

while((entry=readdir(directory_pointer))!=NULL)

{

if(p = strstr(entry-> d_name, a))

{

strcpy(name_temp, entry -> d_name);

change_str(name_temp, a, b);

strcat(old_name, entry -> d_name);

strcat(new_name, name_temp);

if(rename(old_name, new_name) == 0)

printf("%s\n", name_temp);

}

strcpy(new_name, dir);

strcpy(old_name, dir);

strcpy(name_tmp, "\0");

}

}

system("PAUSE");

}