Task.cpp

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

int add(string numberString, char delimiter) //Function to add the numbers
{


    string negNumbers = "";

    int lineTotal; //declare a variable for the total for the line

    vector<int> inputNumbers; //declaring a vector

    stringstream ss(numberString); //declaring a stringstream

    

        //for loop to add integers found to the vector
    for (int i; ss >> i;) {
        //check to see if the number is greater than 1000 before adding
        if (i<1000){
                inputNumbers.push_back(i); 
            }   
        //checks if the character is the delimiter
        if (ss.peek() == delimiter)
            ss.ignore();
    }
        
    //try and catch block to check for negatives
    try{

      
        for (size_t i = 0; i < inputNumbers.size(); i++){
                
            if(inputNumbers[i] < 0){
                //add negatives to a string
                negNumbers += to_string(inputNumbers[i]);
                negNumbers += ",";
                
            }
            
        }
        
        

        if(negNumbers != "")
        {
            //return the list of negatives
            cout << negNumbers << endl;
            throw 1;
        }
    }

    catch (int e){
        
        cout << "negatives not allowed" << endl;
        return 0;
    }

    //for loop to iterate through the vector and add the numbers to the total
    for (size_t i = 0; i < inputNumbers.size(); i++){
        lineTotal = lineTotal +inputNumbers[i];

    }
    return lineTotal;

    

}


int main()
{
    int Total; //declaring a variable to hold the total
    string numberString = "1,2,3,4,5,6,7,8\n1,2,3,4"; //number string declared

    istringstream f(numberString); //istringstream declared
    string line; //declaring a string to hold a single line   
    bool commaCheck = 0;
    bool firstLine = 1;
    char delimiter = ',';
    //while loop to iterate through each line and send it to be added by the add function
    while (getline(f, line)) {
        
        if(firstLine == 0){

            //check to see if there was an invalid comma
            if(line.back()==delimiter){
                cout << "Line must not end with a delimiter" << endl;
                commaCheck = 1;
            }
            //call add function and pass the current line and delimiter
            else{
                Total = Total + add(line, delimiter);
            }
        }
        else{
            //set firstLine to false
            firstLine = 0;
            //check to see if the first line begins with '//'
            if(line.rfind("//",0)==0){
                //sets delimiter to the character that follows the '//'
                delimiter = line.at(2);
            }
            else{
                
                //check to see if there was an invalid comma
                if(line.back()==delimiter){
                    cout << "Line must not end with a delimiter" << endl;
                    commaCheck = 1;
                }
                //call add function and pass the current line and delimiter
                else{
                    Total = Total + add(line, delimiter);
                }
            }

        }

    }

    //check the commaCheck variable before showing final answer
    if(commaCheck == 0){
        cout << Total << endl; //output the final answer
    }
    


}