How to fix vector not printing values from file - c++

Question

I am trying to get some values line by line from a text file:
17.09 284.60 486.01 34.12 12.04 1.20 2.33 36.85 73.44
31.25 196.09 323.26 69.76 47.33 79.82 11.42 27.97 66.61
28.76 41.45 992.29 1.29 42.33 10.83 19.16 5.86 1.88
Taking these values and putting it into a vector. Each row has values to be used in a calculation.
My code:
#include <iostream>
#include <fstream>
#include <string>
#include <iterator>
#include <vector>
using namespace std;
int main() {
ifstream xfile;
string input;
double num=0;
int count = 0;
vector <double> myvector;
cout << "Input the file: ";
cin >> input;
xfile.open(input);
if (xfile.is_open()) {
cout << "File accessed!" << endl;
while (getline(xfile, input)) {
count++;
myvector.push_back(num);
}
}
else {
cout << "File opening failed!"<<endl;
}
cout << "Numbers of lines in the file : " << count << endl;
for (int i = 0; i < myvector.size(); i++) {
cout << myvector[i] << "\t";
}
cin.fail();
return 0;
}
My output is somewhat correct, only that it is printing out just zeroes:
https://ibb.co/xqwT1hR
EDIT: the input is for the name of file. "ahu_long.txt"

Answer 1

You never used your num variable.
double num=0;
....
....
size_t pos = 0;
std::string token;
while (getline(xfile, input)) {
count++;
// you need convert your "input" to a double and save it to "num"
while ((pos = input.find(" ")) != std::string::npos) {
token = input.substr(0, pos);
// std::cout << token << std::endl;
num = atof(token.c_str());
myvector.push_back(num);
input.erase(0, pos + delimiter.length());
}
}
Change your variable with what you read from the file.