#include "iostream"
using namespace std;
class A{
public:
A(int x1){
x = x1;
}
void disp(){
cout << "x = " << x << endl;
}
private:
int x;
};
int main(){
A a(1),b(2);
cout << "a:";
a.disp();
cout << "b:";
b.disp();
return 0;
}
#include "iostream"
using namespace std;
class A{
public:
A(int x1){
x = x1;
}
void disp(){
cout << "\nthis:" << this << "\nx:" << x;
}
private:
int x;
};
int main(){
A a(1),b(2),c(3);
a.disp();
b.disp();
c.disp();
}
新建项目,选择Win32 Console Project
#include <iostream>
using namespace std;
#define PRICE 30 //注意这不是语句,末尾不要加分号
int main ( )
{
int num,total;
num=10;
total=num * PRICE;
cout<<"total="<<total<<endl;
return 0;
}
//新建Student类
#include <string>
using namespace std;
class Student //以class开头
{
public:
int num;
string name;
string sex; //数据成员
void display( ) //这是成员函数
{
cout<<"num:"<<num<<endl;
cout<<"name:"<<name<<endl;
cout<<"sex:"<<sex<<endl;
}
};
//main.cpp中调用
#include"Student.h"
int main ( )
{
Student stud1,stud2; //定义了两个Student 类的对象stud1和stud2
stud1.name = "Tom\0";
stud1.num = 12;
stud1.sex = "M";
stud1.display();
return 0;
}
新建Time类
#include"iostream"
using namespace std;
class Time
{
private:
int hour;
int minute;
int second;
public:
void set()
{
cin>>hour>>minute>>second;
}
void display()
{
cout << hour << ":" << minute << ":" << second << endl;
cout<<sizeof(Time)<<endl;
}
};
main函数调用
Time time;
time.set();
time.display();
运行效果