C++ keyword: for

Usage

• for loop: as the declaration of the loop

Example

#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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See also

• if statement: if , else

• 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 while loop : do , while