Ske algo lab/read input
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- This is part of Ske algo lab.
Detecting EOF for cin
This is the template for 3n+1.
#include <iostream>
#include <string>
using namespace std;
int main()
{
int i, j;
while(cin >> i >> j) {
// ...
}
}
Detecting EOF for getline
You can use std::getline to read the whole line. The following is the template for TEX quotes. You can access string length with length method and you can access each character using []. See reference here.
#include <iostream>
#include <string>
using namespace std;
int main()
{
string st;
while(getline(cin, st)) {
// ...
}
}
Fast IO
In C++, std::cin and std::cout can be very slow. You can add the following two lines before you start using both statements to improve speed.
ios::sync_with_stdio(false);
cin.tie(NULL);