C++ Lessons : 15. While Loop

[quix]

C++ Loops

Loops can execute a block of code as long as a specified condition is reached.

Loops are handy because they save time, reduce errors, and they make code more readable.

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C++ While Loop

The while loop loops through a block of code as long as a specified condition is true:

Syntax

while (condition) {
  // code block to be executed
}
 

In the example below, the code in the loop will run, over and over again, as long as a variable (i) is less than 5:

Example

int i = 0;
while (i < 5) {
  cout << i << "\n";
  i++;
}
 

Note: Do not forget to increase the variable used in the condition, otherwise the loop will never end!