Answer Posted / sr amit tyagi

#include<stdio.h>
#include<conio.h>
void main()
{
FILE *f;
char c;
clrscr();
f=fopen("string","w");
while((c=getchar())!=EOF)
{
putc(c,f);
}
fclose(f);
f=fopen("string","r");
fseek(f,-1L,2);
do
{
putchar(getc(f));
}
while(!fseek(f,-2L,1));
fclose(f);
getch();
}

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