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(C++) for

Keyword for starting a for-loop.

Prefer algorithms over loops [0][1]. See Exercise #9: No for-loops to learn how to do so.

For loop syntax

for ( /* initialization */ ; /* breaking condition */ ; /* after-loop operation */ )

{

// The code block that will be repeated while the breaking condition is true

}

For loop example

#include <iostream>

int main()

{

for (

int i=0; //Create an in-loop integer variable called i

i!=10; //Enter loop while i!=10

++i) //After looping, increment i

{

std::cout << i << ": Hello!\n";

}

}

The code above generates the following screen output:

0: Hello!

1: Hello!

2: Hello!

3: Hello!

4: Hello!

5: Hello!

6: Hello!

7: Hello!

8: Hello!

9: Hello!

References

[0] Bjarne Stroustrup. The C++ Programming Language (3rd edition). ISBN: 0-201-88954-4. Chapter 18.12.1 : 'Prefer algorithms over loops'

[1] Herb Sutter and Andrei Alexandrescu. C++ coding standards: 101 rules, guidelines, and best practices. ISBN: 0-32-111358-6. Chapter 84: 'Prefer algorithm calls to handwritten loops.'

Go back to Richel Bilderbeek's C++ page.

Go back to Richel Bilderbeek's homepage.