Inverse of a 3x3 Matrix

/*Printing Inverse of a 3x3 Matrix
1. Matrix Mirror
2. Determinant
3. Cofactor
4. Adjoint
5. Divide by Determinant*/

#include <stdio.h>
int main()
{
        int i, j, k;
        float det,temp;
        float a[3][3],b[3][3];
        printf("Enter 9 elements in the 3x3 matrix:-\n");
        for(i=0;i<3;i++)
        {
                for(j=0;j<3;j++)
                        scanf("%f",&a[i][j]);
                printf("\n");
        }
        //Matrix Mirror
        b[0][0] =  a[1][1]*a[2][2]-a[1][2]*a[2][1];
        b[0][1] =  a[1][0]*a[2][2]-a[2][0]*a[1][2];
        b[0][2] =  a[1][0]*a[2][1]-a[2][0]*a[1][1];
        b[1][0] =  a[0][1]*a[2][2]-a[2][1]*a[0][2];
        b[1][1] =  a[0][0]*a[2][2]-a[0][2]*a[2][0];
        b[1][2] =  a[0][0]*a[2][1]-a[0][1]*a[2][0];
        b[2][0] =  a[0][1]*a[1][2]-a[0][2]*a[1][1];
        b[2][1] =  a[0][0]*a[1][2]-a[0][2]*a[1][0];
        b[2][2] =  a[0][0]*a[1][1]-a[0][1]*a[1][0];
        //Determinant
        det = a[0][0]*b[0][0]-a[0][1]*b[0][1]+a[0][2]*b[0][2];
        //Cofactor matrix
        b[0][1] = -b[0][1];
        b[1][0] = -b[1][0];
        b[2][1] = -b[2][1];
        b[1][2] = -b[1][2];
        //Adjoint
        temp = b[0][1];
        b[0][1] = b[1][0];
        b[1][0] = temp;
        temp = b[0][2];
        b[0][2] = b[2][0];
        b[2][0] = temp;
        temp = b[1][2];
        b[1][2] = b[2][1];
        b[2][1] = temp;
        //Printing elemets divided by determinant
        for(i=0;i<3;i++)
        {
                for(j=0;j<3;j++)
                        printf("\t%.1f\t",b[i][j]/det);
                printf("\n");
        }
        fseek(stdin,0,SEEK_END);
        getchar();
        return 0;
}