cppfx - cpp/c++, b2 build

Fizz Buzz Problem

Fizz Buzz: Count from 1 to 100, if the number can be divided by 3, return fizz; if the number can be divided by 5, return buzz; if the number can be divided by both 3 and 5, return fizz buzz; otherwise return the number.

1 2 fizz 4 buzz fizz 7 8 fizz buzz 11 fizz 13 14 fizz-buzz 16 17 fizz 19 buzz fizz 22 23 fizz buzz 26 fizz 28 29 fizz-buzz 31 32 fizz 34 buzz fizz 37 38 fizz buzz 41 fizz 43 44 fizz-buzz 46 47 fizz 49 buzz fizz 52 53 fizz buzz 56 fizz 58 59 fizz-buzz 61 62 fizz 64 buzz fizz 67 68 fizz buzz 71 fizz 73 74 fizz-buzz 76 77 fizz 79 buzz fizz 82 83 fizz buzz 86 fizz 88 89 fizz-buzz 91 92 fizz 94 buzz fizz 97 98 fizz buzz

c++ Raw Loop and if Implementation

Loop from 1 to 100, check each number, first judge if it's multiples 15, then 3, then 5, using if else-if else.

// Fizz Buzz c++/cpp
#include <iostream>

int main()
{
        for (int i=1; i<=100; i++)
        {
                if (i%15==0)
                        std::cout << "fizz-buzz ";
                else if (i%3==0)
                        std::cout << "fizz ";
                else if (i%5==0)
                        std::cout << "buzz ";
                else
                        std::cout << i << ' ';
        }
        std::cout << std::endl;
}

jamroot

exe fizz : fizz.cpp : : <cxxstd>20 ;

c++ array: std::array Implementation

std::array is one of STL containers.

Store the result into std::array.

Note that the loop begins from 1, but the container index begins from 0.

// Fizz Buzz c++/cpp
#include <iostream>
#include <array>
#include <string>

int main()
{
        std::array<std::string, 100> array;
        for (int i=1; i<=100; i++)
                if (i%15==0)
                        array[i-1] = "fizz-buzz";
                else if (i%3==0)
                        array[i-1] = "fizz";
                else if (i%5==0)
                        array[i-1] = "buzz";
                else
                        array[i-1] = std::to_string(i);
        for (auto & value: array)
                std::cout << value << ' ';
        std::cout << std::endl;
}