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

void main(void)
{


    int matrix;
    printf ("Press 1 for eigen values of 2 X 2 Matrix\n");
    printf ("Press 2 for eigen values of 3 X 3 Matrix\n");
    scanf ("%d",&matrix);
    printf("\t\n");
    switch(matrix)
    { case 1:
    int a,b,c,d;
    printf ("Enter the values of Matrix\n");
    scanf("%d",&a);
    scanf("%d",&b);
    printf("\n");
    scanf("%d",&c);
    scanf("%d",&d);
   printf("\t\n");
    int l,l1;

    l=((a+d)+sqrt((a+d)*(a+d)-4*((a*d)-(b*c))))/2;
    l1=((a+d)-sqrt((a+d)*(a+d)-4*((a*d)-(b*c))))/2;
    printf("The First  Eigen Value is %d\n",l);
    printf("The Second Eigen Value is %d\n",l1);
    break;
     case 2:
    int a1,b1,c1,d1,e1,f1,g1,h1,i1;
    printf("Enter the values of Matrix\n");
    scanf("%d\n",&a1);
    scanf("%d\n",&b1);
    scanf("%d",&c1);
    printf("\n");
    scanf("%d\n",&d1);
    scanf("%d\n",&e1);
    scanf("%d",&f1);
    printf("\n");
    scanf("%d\n",&g1);
    scanf("%d\n",&h1);
    scanf("%d"  ,&i1);
    printf("\n");
    int p,q,r;
    p = a1+e1+i1;
    q = -(a1*e1)-(a1*i1)-(e1*i1)-(f1*h1)+(b1*d1)+(c1*g1);
    r = (a1*e1*i1)-(a1*f1*h1)-(b1*d1*i1)+(b1*f1*g1)+(c1*d1*h1)-(c1*g1*e1);
    int l2,l3,l4;
    l2 = r;
    l3 = ( p + sqrt(p*p+ 4*(q+r) ) )/2;
    l4 = ( p - sqrt(p*p+ 4*(q+r) ) )/2;
    printf(" First  Eigen Value is %d\n",l2 );
    printf(" Second Eigen Value is %d\n",l3 );
    printf(" Third  Eigen Value is %d\n",l4 );
    break;
    default:
    printf("You Are Supposed To Enter the Values from 1 & 2 only");
    break;
    }





    
}