Code:
#include iostream
#include conio.h
#include stdio.h
using namespace std;
int main()
{
int i, j, k, n;
float a[10][10] = {0},d;
cout<<"Enter the order of matrix ";
cin>>n;
cout<<"Enter the elements\n";
for (i = 1; i <= n; i++)
{
for (j = 1; j <= n; j++)
{
cin>>a[i][j];
}
}
for (i = 1; i <= n; i++)
{
for (j = 1; j <= 2 * n; j++)
{
if (j == (i + n))
{
a[i][j] = 1;
}
}
}
for (i = n; i > 1; i--)
{
if (a[i-1][1] < a[i][1])
{
for(j = 1; j <= n * 2; j++)
{
d = a[i][j];
a[i][j] = a[i-1][j];
a[i-1][j] = d;
}
}
}
cout<<"Augmented Matrix: "<
for (i = 1; i <= n; i++)
{
for (j = 1; j <= n * 2; j++)
{
cout<
}
cout<
}
for (i = 1; i <= n; i++)
{
for (j = 1; j <= n * 2; j++)
{
if (j != i)
{
d = a[j][i] / a[i][i];
for (k = 1; k <= n * 2; k++)
{
a[j][k] = a[j][k] - (a[i][k] * d);
}
}
}
}
for (i = 1; i <= n; i++)
{
d=a[i][i];
for (j = 1; j <= n * 2; j++)
{
a[i][j] = a[i][j] / d;
}
}
cout<<"Inverse Matrix "<
for (i = 1; i <= n; i++)
{
for (j = n + 1; j <= n * 2; j++)
{
cout<
}
cout<
}
getch();
}
Output:
Enter the order of matrix 3
Enter the elements
4
2
7
5
1
8
9
4
7
Augmented Matrix:
9 4 7 0 0 1
4 2 7 1 0 0
5 1 8 0 1 0
Inverse Matrix
-0.490196 0.27451 0.176471
0.72549 -0.686274 0.0588236
0.215686 0.0392157 -0.117647
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