Cpp-learning/运算符/1、算术运算符.cpp

#include <iostream>

int main1()
{

	//加减乘除   +   -   *   /

	//int a1 = 10;
	//int b1 = 3;

	//std::cout << a1 + b1 << std::endl;
	//std::cout << a1 - b1 << std::endl;
	//std::cout << a1 * b1 << std::endl;
	//std::cout << a1 / b1 << std::endl;     //两个整数相除，结果仍然是整数，将小数部分去除

	//int a2 = 10;
	//int b2 = 20;

	//std::cout << a2 / b2 << std::endl;

	//int a3 = 10;
	//int b3 = 0;

	//std::cout << a3 / b3 << std::endl;    //两数相除，除数不可为0

	//两个小数可以相除

	//double d1 = 0.5;
	//double d2 = 0.22;
	//std::cout << d1 / d2 << std::endl;  //运算结果也可以是小数

	//取模运算
	//取模运算的本质就是求余数
	//int a1 = 10;
	//int b1 = 3;
	//std::cout << a1 % b1 << std::endl;
	//
	//int a2 = 10;
	//int b2 = 20;
	//std::cout << a2 % b2 << std::endl;

	//两个数相除，除数不可以为0，所以也做不了取模运算。
	//int a3 = 10;
	//int b3 = 0;
	//std::cout << a3 % b3 << std::endl;
	
	//两个小数之间是不可以做取模运算的
	//double d1 = 3.14;
	//double d2 = 1.1;
	//std::cout << d1 % d2 << std::endl;


	system("pause");

	return 0;

}