求助求助，怎么改

Question

//尽可能少的改程序使得运行结果产生一个含10个welcome to\n字符串的temp.txt文件#include<stdio.h>#include<string.h>int main(int argc,char*argv[]){ int i=0; FILE *fp=fopen("temp.txt","w+"); char string[]="WELCOME TO \n"; char secondstring[]="welcome to\n"; char temp[sizeof(string)]; for(i=0;i<10;i++)   fputs(string,fp);    fseek(fp,0,SEEK_SET);    while((fgets(temp,sizeof(string),fp))!=NULL)    {    fseek(fp,-(long)sizeof(temp),1);    fputs(secondstring,fp); } fclose(fp); return 0;   }