#include<stdio.h>
#include<conio.h>
void main()
{
int s,d;
clrscr();
printf(“Enter a number:”);
scanf(“%d”, &s);
d=s%10;
if(d= =5)
{
s=s/10;
printf(“\n square=%d%d”, s*s++, d*d);
}
Else
Printf(“\n Invalid number”);
}
Output:
Enter a number: 25
Square =625
Why we have to divide s by 10