I am trying to translate a python function to c++ without success. Can someone help me?

The python function receives as input a string S and 2 integers (fragment_size and jump). The aim of this function is to slice the string S in a number of fragments of length equal to the first integer given by the input (fragment_size) and traverse the whole string S with a step equal to the second integer given by the input (jump).

import sys
# First we read the input and asign it to 3 different variables
S = sys.stdin.readline().strip()
fragment_size = sys.stdin.readline().strip()
jump = sys.stdin.readline().strip()def window(S, fragment_size, jump):word = S[:fragment_size]if len(word)< fragment_size:return []else:return [word] + window(S[jump:], fragment_size, jump)# We check that S is not an empty string and that fragment_size and jump are bigger than 0. 
if len(S) > 0 and int(fragment_size) > 0 and int(jump) > 0:# We print the results for i in window(S, int(fragment_size), int(jump)):print(i)

For example: Input ACGGTAGACCT 3 1

Output ACG CGG GGT GTA TAG AGA GAC ACC CCT

Example 2: Input ACGGTAGACCT 3 3

Output ACG GTA GAC

I know how to solve this in c++ returning a string in the window function. But I really need to return a list, like the one I am returning in the python program.

Right now, I have this C++ code:

# include <iostream>
# include <vector>
# include <string>
using namespace std;vector<string> window_list(string word, vector<vector<string>>& outp_list){outp_list.push_back(word);
}vector<string> window(string s, int len_suf, int jump){string word;vector<vector<string>> outp_list; word = s.substr(0, len_suf);if(word.length() < len_suf){return vector<string> window_list();}else {window_list(word, outp_list);return window(s.substr(jump), len_suf, jump);} 
}int main(){// We define the variablesstring s;int len_suf, jump;// We read the input and store it to 3 different variablescin >> s;cin >> len_suf;cin >> jump;// We print the resultvector<string> ans = window(s, len_suf, jump);for(auto& x: ans){cout << x << endl;}return 0;
}

Thanks!

It does the job, but as I'm not very into C++ Alexandros Palacios approach might be better anyways. This is just a blunt translation of your Python code.

#include <strings.h>
#include <iostream>
#include <vector>std::string window(std::string S, int fragment_size, int jump) {for (int i = 0; i <= S.length(); jump) {std::string word = S.substr(i, i+fragment_size);if (word.length() < fragment_size) {return "";}else {return word + " " + window(S.substr(jump, S.length()-1), fragment_size, jump);}}
}int main(int argc, char const *argv[])
{std::string S;std::cout << "Enter DNA sequence: ";std::cin >> S;int fragment_size;std::cout << "Enter fragment size: ";std::cin >> fragment_size;int jump;std::cout << "Enter jump size: ";std::cin >> jump;std::vector<std::string> data;std::string result;if (S.length() > 0 && fragment_size > 0 && jump > 0) {result = window(S, fragment_size, jump);} else {return 1;}size_t pos;std::string delimiter = " ";while ((pos = result.find(delimiter)) != std::string::npos) {data.push_back(result.substr(0, pos));result.erase(0, pos + delimiter.length());}for (const auto &str : data) {std::cout << str << " ";}std::cout << std::endl;return 0;
}