Question

I need to save images captured from camera just like
“D:\storage\img1” then I press “s” another time and program should save
“D:\storage\img2” and then
“D:\storage\img3”
so everytime I press a custom key it will save an image with different name.
How to do that?

Thanks for all your responses

Answer 1

This code concatenates (adds) the value of int i to string filename. This is done through IntToStr() . And int i loops from 0 to 20 and thus creating your “dynamic name”.

File output :

PhotoImage0.txt
PhotoImage1.txt
PhotoImage2.txt
..
..
PhotoImage19.txt

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

string IntToStr(int n) 
{
    stringstream result;
    result << n;
    return result.str();
}

int main () 
{
    ofstream PhotoImageFile;
    int Number_of_files=20;
    string filename;


  for (int i=0;i<Number_of_files;i++)
  {
        filename="c:\\PhotoImage" + IntToStr(i) +".txt";
        cout<< filename << "  \n";

        PhotoImageFile.open(filename.c_str());
        PhotoImageFile << filename<<" : Writing this to a file.\n";
        PhotoImageFile.close();
  }


  return 0;
}