第一種寫法

#include <iostream> using namespace std;class Student{private:char *m_name;int m_age;float m_score;public:Student(char *name,int age ,float score);void show();};//采用初始化列表Student::Student(char *name,int age ,float score):m_name(name),m_age(age),m_score(score){}void Student::show(){cout<<m_name<<"的年齡是"<<m_age<<",的成績是"<<m_score<<endl; }int main() {Student stu("小明",15,93);stu.show();Student *pstu=new Student("李華",16,96);pstu->show();return 0;}

第二種寫法

#include <iostream> #include <string>using namespace std;class Student{ private:string m_name;int m_age;float m_score; public:Student(string name, int age, float score);void show(); }; //采用初始化列表Student::Student(string name, int age, float score){//;m_name=name;m_age=age;m_score=score;}void Student::show(){cout<<m_name<<"的年齡是"<<m_age<<"，成績是"<<m_score<<endl; } int main(){Student stu("小明", 15, 92.5);stu.show();Student *pstu = new Student("李華", 16, 96);pstu -> show();return 0; }

第三種寫法

#include <iostream> using namespace std;class Student{private:char *m_name;int m_age;float m_score;public:Student(char *name,int age ,float score);void show();};//采用初始化列表Student::Student(char *name,int age ,float score):m_name(name){m_score=score;m_age=age;}void Student::show(){cout<<m_name<<"的年齡是"<<m_age<<",的成績是"<<m_score<<endl; }int main() {Student stu("小明",15,93);stu.show();Student *pstu=new Student("李華",16,96);pstu->show();return 0;}

總結

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