C语言写文件操作（一）

#include "stdio.h"
int main(int argc,char *argv[])
{
FILE *fp;
char ch;
fp=fopen("one.txt","wt+");
if(fp==NULL)
{
printf("can not this file");
getch();
exit(1);
}

printf("please input a string:\n");
ch=getchar();
while(ch!='\n')
{
fputc(ch,fp);
ch=getchar();
}
fclose(fp);
return 0;
}