I'm not sure what's wrong, i get the wrong the answers for x, i should be getting:

x0=1

x1=-1

x2=1

Code:int main() { int n = 3, i = 0, j = 0, k = 0; double m = 0; double *b; b = new double[n]; b[0]=0; b[1]=3; b[2]=2; double *x; x = new double[n]; double **A; A = new double *[n]; for(int i=0; i<n; i++) A[i] = new double [n]; A[0][0]=1; A[0][1]=2; A[0][2]=1; A[1][0]=2; A[1][1]=2; A[1][2]=3; A[2][0]=-1; A[2][1]=-3; A[2][2]=0; for (int k=0; k<=n-2; k++) { for (int i=k+1; i<=n-1;i++) { double m = A[i][j]/A[k][k]; for (int j=k; j<=n-1; j++) A[i][j] = A[i][j] - m*A[k][j]; b[i] = b[i] - m*b[k]; } } x[n-1] = b[n-1]/A[n-1][n-1]; for (k=n-2; k>=0; k--) { x[k]=0; for (j=k+1; j<=n-1; j++) x[k] = x[k] + A[k][j] * x[j]; x[k] = (b[k] - x[k])/A[k][k]; } cout << x[1]; system ("pause"); return 0; }