สูตรคูณ

#include <stdio.h>
int main(void) {
    int number = 7;
    // Generate the first five rows.
    for (int multiplier = 1; multiplier <= 5; ++multiplier)
        printf("%d x %d = %d\n", number, multiplier, number * multiplier);
}

#include <iostream>
int main() {
    int number = 7;
    // Generate the first five rows.
    for (int multiplier = 1; multiplier <= 5; ++multiplier)
        std::cout << number << " x " << multiplier << " = " << number * multiplier << '\n';
}