I want to perform Gaussian Elimination on a matrix which is read in as a text file. The format of the text file is as follows:
3
1 3 2 5
0 2 4 4
3 0 9 1
where the first line is the dimension n of the matrix, the subsequent lines contain n + 1 entries each, n for coefficients in the matrix, the remaining entry is the right hand side of the system.
Basically what I want to do is put the matrix in an array and the right hand side vector in a seperate array but ive had problems seperating the content from the text file. Here is the code I've managed to create so far.
#include <iostream>
#include <fstream>
#include <cmath>
#include <cstdlib>
using namespace std;
int main()
{
cout << "Enter file name - " ;
char filename[50];
ifstream file;
cin.getline(filename, 50);
file.open(filename);
if(!file.is_open()){
cout << "file is not valid" << endl;
exit(EXIT_FAILURE);
}
int n;
int matrix;
int i;
//Matrix has to be of size 10 or less
file >> n;
if (n > 10){
cout << "error";
exit(EXIT_FAILURE);
}
else
file >> matrix;
while(file.good()){
cout << matrix << " ";
file >> matrix;
}
system("pause");
return 0;
}
I've used ints instead of arrays just so I have something which runs, what the program is doing is assigning the variable n the number in the first line, but then I want it to assign the matrix portion of the file to a matrix array(which is seperated by spaces and lines) and the right hand side vector to a vector array(which I need to create yet), any help would be appreciated.
