练习一下C++ 11的一些用法...
上窄下宽：
#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;
}
上宽下窄：
#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;
}
