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

CopaceticCoffee (56)
Hey everyone! I am curious how I get a program to stop executing once a particular condition has been met. For example:

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#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?
Last edited on
Nick Schuck (12)
If you just put an else after the if, you can put whatever code you dont want the "weight>0" condition to run.

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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
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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;
}
Last edited on
Arslan7041 (753)
@ Nick, the while loop wont work.

Weight cant be more than 20 AND less than 0 simultaneously.
jgg2002 (217)
@Nick
On the while loop use || instead of &&
Nick Schuck (12)
Excuse me, I meant 

 
 
while ( weight > 0 || weight < 0)
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