C++_函数的常见样式

函数的常见样式
1.无参无返
2.有参无返
3无参有返
4.有参有返

#include<iostream>
using namespace std;
//函数常见样式
//1.无参无返
void test01()
{
    cout << "this is test01 " << endl;    
}
//2.有参无返
void test02(int a)
{
    cout << "this is test02 a = " << endl;
}
//3.无参有返
int test03()
{
    cout << "this is test03 " << endl;
    return 1000;
}
//4.有参有返
int test04(int a)
{
    cout << "this is test04 a = " << a << endl;
    return a;
}
int main() {
    
    //无参无返函数的调用
    test01();
    
    //有参无返函数的调用
    test02(100);
    
    //无参有返函数的调用
    int num1 = test03();
    cout << "num1 = " << num1 <, endl;
    
   //有参有返函数的调用
    int num2 = test04(10000);
    cout << "num2 = " << num2 << ednl;
    system("pause');
    
    retun 0;
}