#include<stdio.h>
int main()
{
FILE *fp;
char ch;
if((fp=fopen("tense","wt"))==NULL)
{
    printf("cannot open file\n");
getch();
exit(1);
}
printf("input sybol:");
while(ch=getchar()!='\n')
fputc(ch,fp);
fclose(fp);
getch();
return 0;
}