**Source Code:**

#include<stdio.h>int main(){float matrix[10][10], ratio,a;int i, j, k, n;printf("Enter order of matrix: ");scanf("%d", &n);printf("Enter the matrix: \n");for(i = 0; i < n; i++){for(j = 0; j < n; j++){scanf("%f", &matrix[i][j]);}}for(i = 0; i < n; i++){for(j = n; j < 2*n; j++){if(i==(j-n))matrix[i][j] = 1.0;elsematrix[i][j] = 0.0;}}for(i = 0; i < n; i++){for(j = 0; j < n; j++){if(i!=j){ratio = matrix[j][i]/matrix[i][i];for(k = 0; k < 2*n; k++){matrix[j][k] -= ratio * matrix[i][k];}}}}for(i = 0; i < n; i++){a = matrix[i][i];for(j = 0; j < 2*n; j++){matrix[i][j] /= a;}}printf("The inverse matrix is: \n");for(i = 0; i < n; i++){for(j = n; j < 2*n; j++){printf("%.2f", matrix[i][j]);printf("\t");}printf("\n");}return 0;}

it is very useful program with nice style

ReplyDeleteGuy you mix I/O with business logic.

ReplyDeleteNice and useful code. Thank you.

ReplyDeletewhat when matrix[i][i]=0. You have not taken care of such situation. When u are going to deal with n*2n matrix, why create a matrix of size 10*10. You should have created a matrix of 5*10 or 10*20 or ...

ReplyDeleteI just want to ask this type similar question . Did you solve if matrix[0][0] = 0; ?

Deletevalues getting replaced.....so no problem if 0 present as diagonal element

Deleteinverse of such a matrix will never exist

DeleteHow amazing work. You help me out. Thanks very much.

ReplyDeleteIs this code work properly with a 6x6 matrix of complex numbers?

ReplyDeletefor solving divide by 0 when matrix[0][0] == 0 use pivoting

ReplyDeleteexample

http://ganeshtiwaridotcomdotnp.blogspot.in/2009/12/c-c-code-gauss-jordan-method-for.html

Thanks.

ReplyDeleteyou must check if the matrix is invertible or not by calculating the determinant of the matrix ,that is,if the determinant is zero ,the matrix has no inverse

ReplyDeletewhat approach did u use? I don't completely understand your program.

ReplyDelete??

ReplyDeleteis this code working when i runthiscode it is giving nan

ReplyDeleteVery smooth code, saved me a lot of work :)

ReplyDeletelogic seems incorrect as matrix[i][i] is 0.

ReplyDeletedoesnt work for huge matrix.