C++ keyword: while
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Identifiers with special meaning
[edit] Usage
- while loop: as the declaration of the loop
- do-while loop: as the declaration of the terminating condition of the loop
[edit] Example
Run this code
#include <iostream> int main() noexcept { int i{3}; // The following 'while' loop statement: // 1. (condition) Checks if value of the variable 'i' is greater than zero // and if not, ends the loop execution with end of this point. // Post-decrements the variable 'i' (decreases its value by 1). // 2. (statement) Writes out a current value of the variable 'i' to the stdout. // 3. Returns to the point 1 (condition). while (i --> 0) // condition: i-- > 0 std::cout << i; // statement: std::cout << i; }
Output:
210
[edit] See also
-
constexprifstatement:constexpr(constexprifstatement)
-
constevalifstatement:consteval(constevalifstatement)
- switch statement:
switch,case - default (as case label declaration) etc:
default - goto statement:
goto - continue statement:
continue - break statement:
break - return statement:
return
- do-while loop and
whileloop:do - for loop and range-based
forloop:for