text: // represent linear equation in form of matrix
  #include<iostream.h>
  #include<conio.h>
   
  using namespace std;
   
  int main(void)
  {
      char var[] = { 'x', 'y', 'z', 'w' };
      cout << "Enter the number of variables in the equations: ";
      int n;
      cin >> n;
      cout << "\nEnter the coefficients of each variable for each equations";
      cout << "\nax + by + cz + ... = d";
      int mat[n][n];
      int constants[n][1];
      for (int i = 0; i < n; i++)
      {
          for (int j = 0; j < n; j++)
          {
              cin >> mat[i][j];
          }
          cin >> constants[i][0];
      }
   
      cout << "Matrix representation is: ";
      for (int i = 0; i < n; i++)
      {
          for (int j = 0; j < n; j++)
          {
              cout << " " << mat[i][j];
          }
          cout << "  " << var[i];
          cout << "  =  " << constants[i][0];
          cout << "\n";
      }
      return 0;
  }
  