2-5-square.cpp

来自「Accelerted cpp 第二章答案 第二部分 一本很好的cpp入门书」· C++ 代码 · 共 24 行

#include<iostream>

int main() 
{
	std::cout << "Please type in the length you want:";
	std::string::size_type squarecols;
	std::cin >> squarecols;
	const int rows = squarecols;
	std::cout << std::endl; 
	
	for(int r = 0;r !=rows;r++) {
		int c = 0;
		while(c != squarecols) {
			if (r == 0 || c == 0 || r == rows - 1 || c == squarecols - 1)
			std::cout << '*';
			else
			std::cout << ' ';
			c++;
			}
		std::cout << std::endl;
	}
	return 0;
}