C++ 11 —— 控制台画等腰三角形

#include <iostream>
#include <string>
#include <vector>

void print(void(*triangle)(int), int params)
{
    triangle(params);
}

void(*triangle)(int) = [](int params) {
    for(int i = 0; i <= params; i++)
    {
        for(int j = params; j >= i; j--)
            std::cout << ‘ ‘;
        for(int k = 0; k < 2*i + 1; k++)
            std::cout << ‘*‘;
        std::cout << std::endl;
    }
};

int main()
{
    std::vector<int> level{4,5,6,7};

    for(auto i : level)
    {
        print(triangle, i);
    }

    return 0;
}

#include <iostream>
#include <string>
#include <vector>

void print(void(*triangle)(int), int params)
{
    triangle(params);
}

void(*triangle)(int) = [](int params) {
    for(int i = 0; i <= params; i++)
    {
        for(int j = 0; j <= i; j++)
            std::cout << ‘ ‘;
        for(int k = 0; k < 2*(params - i) + 1; k++)
            std::cout << ‘*‘;
        std::cout << std::endl;
    }
};

int main()
{
    std::vector<int> level{4,5,6,7};

    for(auto i : level)
    {
        print(triangle, i);
    }

    return 0;
}