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How do I separate a name of something with spaces and numbers from a number in a single line of a file?

I have a file, it looks like this:

Car-in-blue 4
Truck 100 5
Jeep-43 434 6
Machine 123 5

The last digits of a line is an integer number that should be inserted into an int variable. The names containing hyphens, spaces, and numbers should be inserted into a string variable.

It should be like this:

int a = 4
string name = "Car-in-blue"

int a = 5
string name = "Truck 100"

int a = 6
string name = "Jeep-43 434"

int a = 5
string name = "Machine 123"

I added a screenshot of the original problem, it's not in English, but that doesn't matter, that's how it looks in the problem:

Screenshot

Text version:

Cap-de-bour 4
Romania 100 10
Cap-de-bour 7
Cap-de-bour 4
Romania 100 5
Romania 100 5
Romania 100 5
CRACIUN 2018 15
Romania 100 10
Solution

  • Not the safest code but detailed and clear:

    The most convenient way to do this for me (that would only work for this example) is to put these things into a string, and then sort through the string in reverse.

    I don't know how you're getting the information to begin with, but if you need to grab it from a text file first do this code:

    #include <fstream>
#include <vector>
#include <string>
#include <iostream> //not sure if needed but I always include it

int main()
{
    std::vector<string> lines;
    std::string temp;
    ifstream is("FILENAME.txt");
    while (!is.eof()) //make sure it's not the end of the file (eof)
    {
        std::getline(is, temp); //get a line and toss it into "temp".
        lines.push_back(temp);//create new entry in our vector.
    }
}

    Next to actually iterate:

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

int main()
{

    vector<string> lines;
    string temp_string;
    ifstream is("FILENAME.txt");
    while (!is.eof()) //make sure it's not the end of the file (eof)
    {
        getline(is, temp_string); //get a line and toss it into "temp".
        lines.push_back(temp_string);//create new entry in our vector.
    }


    vector<string> model;
    vector<int> number;
    string line, temp_model;
    int temp_number;
    for (int i = 0; i < lines.size(); i++)
    {
        line = lines[i];
        temp_string = "";//reset string
        temp_number = 0;//reset integer
        for (int x = line.size() - 1; x >= 0; x--) //reverse iteration
        {
            if (line[x] == ' ')
            {
                //x now is the breaking point between the mode name and the number. use that to get model name now:
                temp_model = "";//reset string
                for (int c = 0; c < x/*to make surewe don't pass the stopping point*/; c++)
                {
                    temp_model += line[c];
                }

                break;//end loop
            }
            //if still for some reason need to check if it's a number, use std::isdigit()
            temp_string += line[x]; //adds the current character to our temporary string
        }


        //Reverse the string so that it's in proper order:
        for (int x = temp_string.size() - 1; x >= 0; x--);
        {
            //mini algorithm I came up with to store the number
            temp_number = 10 * temp_number;
            temp_number += stoi(temp_string); //attempt to convert string to integer (s to i)
        }
        number.push_back(temp_number);//store entry
        model.push_back(temp_model);//store entry
    }

    //output results:
    for (int i = 0; i < model.size(); i++)
    {
        cout << "Model: " << model[i] << endl;
        cout << "Number: " << number[i] << endl;
    }
}

    Output: output