Cpp-learning/运算符/2、前后置递增运算.cpp

#include <iostream>

int main2()
{

	//1、前置递增
	//int a = 10;
	//++a;                        //让变量进行+1的操作
	//std::cout << "a = " << a << std::endl;


	//2、后置递增
	//int b = 10;
	//b++;                      
	//std::cout << "b = " << b << std::endl;

	//3、前置和后置的区别
	//前置递增  先让变量+1  然后进行表达式计算
	int a2 = 10;
	int b2 = ++a2 * 10;
	std::cout << "a2 = " << a2 << std::endl;
	std::cout << "b2 = " << b2 << std::endl;
	
	//后置递增   先进行表达式计算   后让变量+1
	int a3 = 10;
	int b3 = a3++ * 10;
	std::cout << "a3 = " << a3 << std::endl;
	std::cout << "b3 = " << b3 << std::endl;


	system("pause");

	return 0;
}