How do I get the code to stop running if a certain condition is true?

[CopaceticCoffee]

Hey everyone! I am curious how I get a program to stop executing once a particular condition has been met. For example:

#include <iostream>
using namespace std;

int main()
{

double weight;

cout << "Enter weight" << endl;
cin >> weight;
if (weight > 20)
  {
    cout << "Sorry, the weight cannot exceed 20lbs.\n";
  }

// More code . . . 

If the weight exceeds 20lbs, how do I get the program to stop instead of executing the rest of the code?

[Nick Schuck]

If you just put an else after the if, you can put whatever code you dont want the "weight>0" condition to run.

int main()
{
double weight;

cout << "Enter weight: " << endl;
cin >> weight;

if (weight > 20)
{
          cout << "Sorry, weight cannot exceed 20lbs.\n";
}
else
{
         //Whatever more code you have . . .
}
return 0;
}

Although, you could make it so you ask the user to input a new answer if you wanted. This could be done by

int main()
{
double weight;

cout << "Enter weight: " << endl;
cin >> weight;
while (weight > 20 || weight < 0)  //I add this weight<0 condition just from assumption
{
cout << "Sorry, weight must not exceed 20lbs.\n Please enter valid entry";
cin >> weight;
}
//whatever more code you have
return 0;
}

[Arslan7041]

@ Nick, the while loop wont work.

Weight cant be more than 20 AND less than 0 simultaneously.

[jgg2002]

@Nick
On the while loop use || instead of &&

[Nick Schuck]

Excuse me, I meant

while ( weight > 0 || weight < 0)