Selects a random entry from a given list of items, like Class Members. Takes data from a text file called 'items.txt' that lists every item, one per line.

randomItem.cpp

/*
    Selects a random entry from a given list of items, like Class Members.
    items.txt contains the items, one per line.
*/
#include <fstream>
#include <vector>
#include <string>
#include <time.h>
#include <iostream>
#include <Windows.h>

using namespace std;

ifstream fin;

void getRand(vector<string>);
bool again();

int main(){
    srand(time(0)); //Seed Random Number Generator
    vector<string> names; //Holds items

    //Load Items
    fin.open("items.txt");
    while(!fin.eof()){
        string temp;
        getline(fin, temp);
        if(temp != "")
            names.push_back(temp);
    }
    fin.close();

    //Get random item, and keep going as long as the user wants.
    bool more = false;
    do{
        getRand(names);
        more = again();
    }while(more);

    return 0;
}
void getRand(vector<string> names){
    char ipt;
    int randIdx = rand() % names.size(); //Get random index from 0 to names.size()-1
    cout << "\"" << names[randIdx] << "\" was randomly selected." << endl << endl; //Print to console the random item
}
bool again(){
  //Ask user to go again. Only accepts 'y', 'Y', 'n', 'N' as vaild inputs.
    cout << "Another? y/n: ";
    char ipt;
    cin >> ipt;
    switch(ipt){
        case 'y': case 'Y': system("CLS"); return true;
        case 'n': case 'N': return false;
        default: cout << "INVALID INPUT" << endl; return again();
    }
}