0
from:
http://local.wasp.uwa.edu.au/~pbourke/other/determinant/
/*
Recursive definition of determinate using expansion by minors.
*/
double Determinant(double **a,int n)
{
int i,j,j1,j2;
double det = 0;
double **m = NULL;
if (n < 1) { /* Error */
} else if (n j1)
continue;
m[i-1][j2] = a[i][j];
j2++;
}
}
det += pow(-1.0,1.0+j1+1.0) * a[0][j1] * Determinant(m,n-1);
for (i=0;i<n-1;i++)
free(m[i]);
free(m);
}
}
return(det);
}
//New Answer By Shaikh SOHIAL Hussain form Pakistan
#include<stdio.h>
#include<conio.h>
void main ()
{ clrscr();
int a[10][10],row,i=0,j=0,result,w,x,y,z;
printf("This Program made 4 solve matrix determintae\n");
scanf("%d",&row);
while(i<row)
{printf("\n");
for(j=0;j<row;j++)
{ printf("Enter the value of %d%d\n",i,j);
scanf("%d",&a[i][j]);
}
i++;
}
i=0;
while(i<row)
{ printf("\n");
j=0; while( j<row)
{printf("%d",a[i][j]);
printf(" ");printf(" ");
j++;}
i++;
}
if(row==2)
{
result=(a[0][0]*a[1][1])-(a[0][1]*a[1][0]);
printf("The answer is\t %d",result);
}
else if(row==3)
{ result=(a[0][0]*((a[1][1]*a[2][2])-(a[1][2]*a[2][1]))) - (a[0][1]*((a[1][0]*a[2][2])-(a[1][2]*a[2][0]))) + (a[0][2]*((a[1][0]*a[2][1])-(a[1][1]*a[2][0])));
printf("\nThe answer is \t %d",result);
}
else if(row==4)
{
w=a[0][0]*(a[1][1]*(a[2][2]*a[3][3]-a[2][3]*a[3][2])-a[1][2]*(a[2][1]*a[3][3]-a[2][3]*a[3][1])+a[1][3]*(a[2][1]*a[3][2]-a[2][2]*a[3][1]));
x=a[0][1]*(a[1][0]*(a[2][2]*a[3][3]-a[2][3]*a[3][2])-a[1][2]*(a[2][0]*a[3][3]-a[2][3]*a[3][0])+a[1][3]*(a[2][0]*a[3][2]-a[2][2]*a[3][0]));
y=a[0][2]*(a[1][0]*(a[2][1]*a[3][3]-a[2][3]*a[3][1])-a[1][1]*(a[2][0]*a[3][3]-a[2][3]*a[3][0])+a[1][3]*(a[2][0]*a[3][1]-a[2][1]*a[3][0]));
z=a[0][3]*(a[1][0]*(a[2][1]*a[3][2]-a[2][2]*a[3][1])-a[1][1]*(a[2][0]*a[3][2]-a[2][2]*a[3][0])+a[1][2]*(a[2][0]*a[3][1]-a[2][1]*a[3][0]));
result=w-x+y-z;
printf("\n The answer is \t %d", result);
}
else{ printf("Determinate Limit is 4*4 max\n");
getch();
}
You can find the answer of this questions from this link. Also, you can find the related answers to C Programming. http://study-for-exam.blogspot.com/2013/04/write-c-progrm-to-find-determinant-of.html#.UXiMc4Jbwxg"
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