C++ keyword: while - cppreference.com (original) (raw)
[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
#include 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: