#include <iostream>

//常见的函数样式有4种
//1、无参无返
void test01()
{
	std::cout << "This is test01" << std::endl;
}
//2、有参无返
void test02(int a)
{
	std::cout << "This is test02 a = " <<  a << std::endl;
}
//3、无参有返
int test03()
{
	std::cout << "This is test03 " << std::endl;

	return 1000;
}

//4、有参有返
int test04(int a)
{
	std::cout << "This is test 04 a= " << a << std::endl;

	return a;
}

int main4()
{
	//无参无返的函数调用
	test01();

	//有参无返函数调用
	test02(100);

	//无参有返函数的调用
	int num1 = test03();
	std::cout << "num1 = " << num1 << std::endl;

	//有参有返函数的调用
	int num2 = test04(1000);
	std::cout << "num2 =" << num2 << std::endl;



	system("pause");

	return 0;
}