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

void main()
{
    int n1,n2,com=0,i,j,com9=0,n,m;
    clrscr();
        printf("\n\n\t\t YOU ENTER VALUE IN DECIMAL MEANS (0-9)\n\n");
        printf("\n PLEASE ENTER THE VALUE OF N1:= ");
        scanf("%d",&n1);
        printf("\n PLEASE ENTER THE VALUE OF N2:= ");
        scanf("%d",&n2);
        for(i=1,j=9;i<n2;i=i*10,j=j+(9*i))
        {
            n=i;
            m=j;
        }
            printf("\nI=%d \n j=%d",i,j);
            printf("\nn=%d \n m=%d",n,m);
            com=m-n2;
            printf("\n IT IS VALUE OF COMPLEMENTED %d",com);
        com9=n1+com;
        if(com9>m)
            com9=com9-i+1;

        printf("\n\n\tIT IS THE VALUE OF 9`S COMPLEMENT %d",com9);


        getch();

}