CODEWITHSUNDEEP
c++variablesdeclaration
امیر مهدی هدایتی
امیر مهدی هدایتی

Reputation: 1

How to declare a long long integer in c++?

what is this code bug? when I enter 50.000 , 50,000 it does not work.

#include <iostream>
using namespace std;
int main()
{
    int a,b;
    long long int cost;
    cin>>a>>b;
    cost=a*b;
    cout<<cost;
}

Upvotes: 0

Views: 1735

Answers (1)

Jabberwocky
Jabberwocky

Reputation: 50831

a and b are declared as int. The type of the result a * b is also int. 50000 * 50000 exceeds the capacity of an signed int. That bougous result will then be assigned to the long long int cost.

You need to declare a and b also as long long int, then the type of a * b will also be long long int and you won't see any problems, provided that the multiplication of a and b does not exceed the capacity of long long int, which still can happend here if you enter really large numbers.

Upvotes: 1

Related Questions