for-loop construction start in a c++ program [closed] - c++

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I have a problem in the for-construction, I don't know why my counting starts from 0 but you can't write on it(you can write starting with Register 1).I've marked in the code where is the problem.
#include <iostream>
#include <string>
#include <vector>
int main()
{
std::string day, date;
int registerCount;
std::cout << "INPUT DATA"
<< std::endl << std::endl
<< "Enter the day in which you want to perform the register: "
<< std::endl;
std::cin >> day;
std::cout << "DATE:" << std::endl;
std::cin >> date;
std::cout << "Enter the number of registers you wanna perfom for the day "
<< day << ":" << std::endl;
std::cin >> registerCount;
std::vector<std::string> registers(registerCount);
for (int i = 0; i < registerCount; ++i) **here is the problem**
{
std::cout << "Register " << i << ":" << std::endl; **it starts from 0 but you can't write on Register 0**
std::getline(std::cin, registers[i]);
}
std::cout << "The data for the day of " << day << " are the following: "
<< std::endl;
std::cout << "DATE: " << date << std::endl;
for (int i = 0; i < registerCount; ++i)
std::cout << registers[i] << std::endl;
}

Answer 1

Use
std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
Header - #include<limits>
after your
std::cin >> registerCount;
to "eat up" the trailing newline coming from previous std::cin which is cause of skipping of the first input

Answer 2

for (int i = 0; i < registerCount; ++i)
You're defining i as starting at 0 here. Very simply, all you need to do is change the "i = 0" to "i = 1".
The way you're assigning to that vector looks a little bit wrong too. I think you need to use push_back() on the vector in that syntax, but I'm not too familiar with all the different operators for vector.