Determinant of Matrix Program - Program to Find Determinant of Matrix

In this post i am sharing a C program to calculate determinant of matrices. Determinant exists only for square matrix. Here i have wrote a c program to find determinant of matrices of order less than or equal to 3.

#include<stdio.h>

void main()
{
int a[10][10],i,m,j;
int det=0;
printf("\nEnter the order of matrix:\n ");
scanf("%i",&m);
printf("\nenter elements\n");
for(i=0;i<m;i++)
 {
 for(j=0;j<m;j++)
  scanf("%d",&a[i][j]);
 }
printf("\nThe matrix is\n");
for(i=0;i<m;i++)
 {
 printf("\n");
 for(j=0;j<m;j++)
  printf("%3d",a[i][j]);
 }
printf("\nthe transpose is\n");
for(i=0;i<m;i++)
{
for(j=0;j<m;j++)
printf("%3i",a[j][i]);
printf("\n");
}
if(m==1)
{
det=a[0][0];
printf("det=%i",det);
}
else if(m==2)
{
int k=1,l=1;
for(i=0;i<2;i++)
for(j=0;j<2;j++)
{
if(i==j)
k*=a[i][j];
else
l*=a[i][j];
}
printf("\ndeterminant=%i",k-l);
}
else if(m==3)
{
for(i=0;i<3;i++)
det=det+(a[0][i]*(a[1][(i+1)%3]*a[2][(i+2)%3]-a[1][(i+2)%3]*a[2][(i+1)%3])); 
printf("\nDeterminant of matrix is: %d",det);
}
else
printf("This program can't calculate determinant of matrix of order greater than 3");
}