Thread: series of lines in text Get the Integer and Sum

Instructions : Read a series of lines from a text file, get the numeric values in each line, perform addition and display sum

and this is my code

Code:

#include <iostream>
#include <fstream>
using namespace std;

int main() {
    int sum = 0;
    char x[50];
    double d;
    
    ifstream inFile;
    inFile.open("input.txt");
    
    while(inFile.getline(x,50)) {
    cout<<x<<endl;
    d=atof(x);
    sum+=d;
            cout<< sum << endl;
            } 
    }
    
    system("pause");
}

and the text from the file is

hello51.20world10.00again
40programming
file 20editsearch50 project.15

the output should be

hello51.20world10.00again
61.2

40programming
40

file 20editsearch50 project.15
70.15

can u help me? just give me the algorithm to sum and the string function to use