rename函数

#include <string.h>
#include <stdlib.h>
#include <stdio.h>

int main(int argc, char ** argv)
{
    char oldname[128];
    char newname[128];
    memset(oldname, 0, sizeof(oldname));
    memset(newname, 0, sizeof(newname));
    strcpy(oldname, "/home/eas/src/API_fun/wangxc.txt");
    strcpy(newname, "/home/eas/src/API_fun/wangxiancai.txt");
    rename(oldname, newname);
    return 0;
}