I have a string from command line input, like this:
string input = cmd_line.get_arg("-i"); // Filepath for offline mode
This looks like a file as below:
input = "../../dataPosition180.csv"
I want to extract out the 180 and store as an int.
In python, I would just do:
data = int(input.split('Position')[-1].split('.csv')[0])
How do I replicate this in C++?
Here's a (somewhat verbose) solution:
#include <string>
#include <iostream>
using namespace std;
int main() {
string input = "../../dataPosition180.csv";
// We add 8 because we want the position after "Position", which has length 8.
int start = input.rfind("Position") + 8;
int end = input.find(".csv");
int length = end - start;
int part = atoi(input.substr(start, length).c_str());
cout << part << endl;
return 0;
}
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