Cfrgtkky

Good evening all, I am trying to get a vector of vectors to store essentially a table of values where the second column uses the number from the first to calculate it and well, it is not working.
I want it to store my values like:

    T   R

0 | 20 [R1]

1 | 30 [R2]

2 | 40 [R3]

3 | 50 [R4]

4 | 60 [R5]

[Continues until hits last number]

The numbers along the left side are the rows like Stuff[0][T] = 20, etc



So T would be vector<double>Temp and R would be vector<double>Resistance and 

they are both contained in vector<vector<double> >Stuff.

And so the R vector would use the values of T to calculate the resistance.

int main ()                                                                                         

{



    double InitTemp,FinTemp,TempIncr;

    vector <vector <double> > Stuff;



    cout << "What is the range of temperatures being tested?(Initial Final) ";

    cin >> InitTemp >> FinTemp;

    cout << "How much would you like each temperature to increment? ";

    cin >> TempIncr;



    for(int i = 0; i < 2; i++)

    {

        vector <double> Temp;

        vector<double> Resistance;

        if(i == 0)

        {



            for (int j = InitTemp; j <= FinTemp; j+=TempIncr)

                Temp.push_back(j);

            Stuff.push_back(Temp);

        }



        if(i == 1)

        {



            double R=0;

            for(int k = 0; k < Temp.size();k++)

            {

                R = Temp[k]+1;

                Resistance.push_back(R);

            }

            Stuff.push_back(Resistance);

        }



    for (int i = 0; i< Stuff.size(); i++)

    {

        for(int j = 0; j < Stuff[i].size(); j++)

            cout << Stuff[i][j] << " ";

        cout << endl;

    }

This piece of program will go in another larger program that uses a function to calculate the resistance but I still need to use Temp to do so which is why I have it just adding 1 to the temp as a placeholder.
My output looks like this:

What is the range of temperatures being tested?(Initial Final) 20 200

How much would you like each temperature to increment? 10

20

30

40

50

60

70

80

90

100

110

120

130

140

150

160

170

180

190

200

Press any key to continue . . .

It does not output my second vector, if it even made it. Please help me understand

Go for a std::vector of std::pair<double, double>. Then your code will become much simpler. The first double is Temperature and the second is Resistance. From what I see in your code, Resistance is just 1 added to Temperature. In that case the following code should work:

#include<iostream>

#include<vector>

#include<algorithm>

using namespace std;



int main()

{

    double InitTemp, FinTemp, TempIncr;

    vector <pair<double, double > > Stuff;



    cout << "What is the range of temperatures being tested?(Initial Final) ";

    cin >> InitTemp >> FinTemp;

    cout << "How much would you like each temperature to increment? ";

    cin >> TempIncr;



    for (int j = InitTemp; j <= FinTemp; j += TempIncr)             

        Stuff.emplace_back(j, j+1);



    for (int i = 0; i < Stuff.size(); i++)

    {

        cout << Stuff[i].first << ", " << Stuff[i].second << endl;

    }

}