I tried to do a calendar with regular affairs(like payment) and get out_of_range when added an affair to 31 January.
So I think that I allocated a memory incorrectly in my 2d vector. Also, I tried debugging, but I couldn't check the size of the vector(month) from the vector of vectors. So I also tried a sizeof but he shows 0
in this case: cout << sizeof(business) / sizeof(business[0][0]); and 1 in this: cout << sizeof(business) / sizeof(business[0]);.
Input is:
12 Add 5 Salary
Add 31 Walk
#include "pch.h"
#include <iostream>
#include <string>
#include <vector>
using namespace std;
void Add(vector<vector<string>>& business, const int current_month)
{
int current_day;
string s;
cout << "Enter a day, please" << endl;
cin >> current_day;
cout << "Enter your business, please" << endl;
cin >> s;
current_day -= 1;
business[current_month][current_day] = s;
}
int main()
{
int current_month = 0;
vector<int> count_of_days_in_months = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
vector<vector<string> > business(12, vector<string>(( count_of_days_in_months[current_month] ) - 1));
cout << sizeof(business) / sizeof(business[0][0]);
int Q;
cin >> Q;
string command;
for (int j = 0; j < Q; j++)
{
cout << "Enter a command, please" << endl;
cin >> command;
if (command == "Add")
Add(business, current_month);
else if (command == "Dump")
Dump(business, current_month);
else if (command == "Next")
Next(business, count_of_days_in_months, current_month);
}
}
The std::vector constructors are endlessly confusing to memorize. This constructor is getting called:
std::vector::vector(size_type n, const value_type& v)
which create n items and copies v to each one. The result is an array of 12 items, each with the same number of days as the current month.
It looks like you want to allocate a whole year's worth of days using that table. I don't know a constructor for std::vector that does that. But it's not a lot of code to do it manually:
std::vector<std::vector<string>> business;
business.reserve(count_of_days_in_months.size());
for (auto days : count_of_days_in_months) {
business.emplace_back(days);
}