Check the input

Read first Task 46

Never trust a number that comes from outside the program.

Task

Why validate months before multiplying?

The editor already contains a starting point. Change it until every check passes — the Next task button unlocks when it does.

What you start with

#include <iostream>
using namespace std;

int main() {
    int months = -2;
    if (months <= 0) {
        cout << "invalid months" << endl;
    } else {
        cout << months * 9000 << endl;
    }
    return 0;
}

C++ 1 automatic check Section 5 · Objects and real programs

Code editor Ctrl + Enter runs

#include <iostream>
using namespace std;

int main() {
    int months = -2;
    if (months <= 0) {
        cout << "invalid months" << endl;
    } else {
        cout << months * 9000 << endl;
    }
    return 0;
}

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