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//Include the necessary packages
#include <iostream>
#include <fstream>
#include <vector>
#include <iomanip>
#include <string>
//Use the std namespace
using namespace std;
//Initiate the main program.
int main() {
//Declare the necesarry variables.
int n = 0;
int i = 0;
int line = 0;
int element = 0;
double tempval;
string startstring, middlestring, endstring, aline;//create temporary strings to hold the data.
vector <double> templine;//Create a temporary line vector to hold the data.
vector <vector <double>> data;//create a vector of vectors to hold the data.
ifstream myFile ("test_data.txt");//Open the file for reading.
if(myFile.is_open()) {//If the file is open.
cout << "File Opened\n";//Tell the user the file opened.
while(!myFile.eof()) {//While not at the end of the file.
getline (myFile,aline);//Put the current line into a string.
int comma_pos = aline.find(',',0);//Find the first comma in the line.
int nextcomma = aline.find(',',comma_pos+1);//Find the comma after that.
startstring = aline.substr(0,comma_pos);//Put the first value into a string.
tempval = atof(startstring.c_str());//Put the string into a double.
templine.push_back(tempval);//Push the double into a vector.
while (aline.find(',',comma_pos) != -1) {//While not on the last comma.
comma_pos = aline.find(',',0);
nextcomma = aline.find(',',comma_pos+1);
middlestring = aline.substr(comma_pos+1,nextcomma);
tempval = atof(middlestring.c_str());
templine.push_back(tempval);
endstring = aline.substr(comma_pos+1, aline.length()-1);
data.push_back(templine);
n++;
}
}
}
else {//If the file did not open.
cout << "File unable to be opened\n";
exit(1);//Tell the user and exit.
}
myFile.close();
for ( i = 0; i < n; i++ ) {
ofstream outfile("inverted_Matrix.txt");
if(outfile.is_open()) {
cout << "File opened for writing\n";
}
else {
cout << "File unable to be opened for writing\n";
exit(1);
}
for (i = 0; i < data.size(); i++) {
outfile << setprecision(2) << fixed << data[i][0] << " " << setprecision(3) << data[i][1] << endl;
}
}
return 0;
}
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