C++ If ... Else Examples
Real Life Example
This example shows how you can use if..else to "open a door" if the user enters the correct code:
Example
int doorCode = 1337;
if (doorCode == 1337) {
cout << "Correct
code.\nThe door is now open.\n";
} else {
cout << "Wrong
code.\nThe door remains closed.\n";
}
Try it Yourself »
This example shows how you can use if..else to find out if a number is positive or negative:
Example
int myNum = 10; // Is this a positive or negative number?
if (myNum >
0) {
cout << "The value is a positive number.\n";
} else if
(myNum < 0) {
cout << "The value is a negative number.\n";
} else
{
cout << "The value is 0.\n";
}
Try it Yourself »
Find out if a person is old enough to vote:
Example
int myNum = 10; // Is this a positive or negative number?
if (myNum >
0) {
cout << "The value is a positive number.\n";
} else if
(myNum < 0) {
cout << "The value is a negative number.\n";
} else
{
cout << "The value is 0.\n";
}
Try it Yourself »
Find out if a number is even or odd:
Example
int myNum = 5;
if (myNum % 2 == 0) {
cout << myNum << " is
even.\n";
} else {
cout << myNum << " is odd.\n";
}
Try it Yourself »
