C++判定三边是否构成三角形

开发工具：VS 2017

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

int main()
{
	// 求三角形周长
	float a = 3.3, b = 4.4, c = 5.7;
	cout<< "三角形周长为：" << a + b + c << endl;

	// 判断给定三条边能否构成三角形
	int a1 = a * 10 - 30, b1 = b * 10 - 40, c1 = c * 10 - 50;
	bool boo = (c1 + b1 > a1) && (c1 + a1 > b1) && (a1 + b1 > c1);
	//cout << boo << endl;
	if (boo == true) {
		cout << "给定三条边能够构成三角形。" << endl;
	}
	else {
		cout << "给定三条边不能构成三角形。" << endl;
	}

	return 0;
}