C++打印三角形、心形

开发工具：VS 2017

//  打印三角形、心形

#include "pch.h"
#include <iostream>
using namespace std;

void main()
{
	int i, j, k;
	for (i=1; i <= 5; i++){	//控制行数
		for (j = 1; j <= 5 - i; j++) {	// 控制空格数
			cout << " ";
		}
		for (k = 1; k <= 2 * i - 1; k++) {	// 控制打印*号的数量
			cout << "*";
		}
		cout << endl;
	}

	cout << endl;

	for (i = 1; i <= 5; i++) {	//控制行数
		for (k = 1; k <= 2 * i - 1; k++) {	// 控制打印*号的数量
			cout << "*";
		}
		for (j = 1; j <= 5 - i; j++) {	// 控制空格数
			cout << " ";
		}
		cout << endl;
	}

	cout << endl;

	for (i = 5; i >= 1; i--) {	//控制行数
		for (k = 1; k <= 2 * i - 1; k++) {	// 控制打印*号的数量
			cout << "*";
		}
		for (j = 1; j <= 5 - i; j++) {	// 控制空格数
			cout << " ";
		}
		cout << endl;
	}

	cout << endl;

	for (i = 5; i >= 1; i--) {	//控制行数
		for (j = 1; j <= 5 - i; j++) {	// 控制空格数
			cout << " ";
		}
		for (k = 1; k <= 2 * i - 1; k++) {	// 控制打印*号的数量
			cout << "*";
		}
		cout << endl;
	}

	cout << endl;

	// 打印心形
	float x, y;
	string s = "I love you!";
	int l = s.length();
	for (y = 1.3f; y >= -1.1f; y -= 0.06f)
	{
		int t = 0;
		for (x = -1.1f; x <= 1.1f; x += 0.025f)
		{
			double heart = x * x + (5.0*y / 4.0 - sqrt(abs(x)))*(5.0*y / 4.0 - sqrt(abs(x)));
			if (heart <= 1) {
				cout << s[t];
				t = (t + 1) % l;
			}
			else cout << " ";
		}
		cout << endl;
	}
}