Code Snippet
// This program will find the determinant value of a square matrix.
#include<stdio.h>
#include<conio.h>
void main()
{
int mat[10][10],deter,n,i,j,k,k1,add=0, sub=0, temp=1;
clrscr();
printf("Please give the row or column No. of a square matrix = ");
scanf("%d", &n);
printf("Please give the values of the Matrix");
for(i=0;i<n;i++)
{
printf("\n");
for(j=0;j<n;j++)
{
printf("Row no %d Column No. %d = ",i+1,j+1);
scanf("%d",&mat[i][j]);
}
}
// Now we will start calculating the addition part...
for (k=0;k<n;k++)
{
temp=1;
for (i=k,k1=0,j=0; k1<n; k1++, j++, i++)
{
i=i%n;
temp*=mat[i][j];
}
add+=temp;
}
// Now we will start the subtraction portion....
for (k=1; k<=n; k++)
{
temp=1;
for (i=n-k, k1=0, j=0; k1<n; k1++, j++, i--)
{
i= (i+n)%n;
temp*=mat[i][j];
}
sub+=temp;
}
deter = add - sub;
printf("\nThe matrix is :");
for(i=0; i<n; i++)
{
printf("\n");
for(j=0; j<n; j++)
{
printf(" %d", mat[i][j]);
}
}
printf("\n The Determinant of the matrix is %d", deter);
getch();
}
