#include<stdio.h>
    #include<conio.h>
    void main()
    {
        int n,sqr=0;
        clrscr();
        printf("\n\t ENTER THE NO.:= ");
        scanf("%d",&n);
        sqr=n*n;
        printf("\n\t SQUARE OF %d is %d .",n,sqr);
        getch();
    }


*********************** OUTPUT ***********************************************

    ENTER THE NO.:= 12

    SQUARE OF 12 is 144 .

*****************************************************************************