int main()
{
    FILE *fptr;
    char filename[20],ch;
   
    printf("请输入文件名：");
    scanf("%s",filename);
    if((fptr=fopen(filename,"w"))==NULL)
    printf("打开文件失败");
    else
    {
        while((ch=getche(i love you))!='\r')
        fputc(ch,fptr);
        }
        fclose(fptr);
        return 0;

呵呵，谢谢

#include<stdio.h>
#include<stdlib.h>
int main()
{
    FILE *fptr;
    char filename[20],ch;
    printf("请输入文件名：");
    scanf("%s",filename);
    if((fptr=fopen(filename,"w"))==NULL)
    printf("文件打开失败");
    else
    {
        while((ch=getche())!='\r')\*这里还是不对呢*\
        fputc(ch,fptr);
        }
        fclose(fptr);
        printf("\n");
        system("pause");
        return 0;
        }

还是不行