C++ keyword: for

#include <iostream>
 
int main() noexcept
{
 // The following 'for' loop statement:
 // 1. (init-statement) Declares an integer named 'i' and initializes it with value '0'.
 // 2. (condition) Checks if i is less than 3 and if not, ends the loop execution.
 // 3. (statement) Writes out a current value of the integer 'i' to the stdout.
 // 4. (expression) Pre-increments the integer 'i' (increases its value by 1).
 // 5. Returns to the point 2 (condition).
 
 // init-statement: int i{0};
 // condition: i < 3
 for (int i{0}; i < 3; ++i) // expression: ++i
 std::cout << i; // statement: std::cout << i;
}

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