C Program to find square of a number using functions.

#include<stdio.h>
#include<conio.h>

void main()
{
int rev(int);
int r,a;
clrscr();
printf(“enter any no: ”);
scanf(“%d”,&a);
r=rev(a);
printf(“square is : %d”,r);
getch();
}
int rev(int x)
{
return(x*x);
}

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