第一章 C++初步知识

//p5//输出字符串"This is a C++ program."#include <iostream>using namespace std;int main(){cout<<"This is a C++ program."<<"\n";return 0;}

运行结果：

//p6//求两数之和#include <iostream>using namespace std;int main(){int a,b,sum;cin>>a>>b;sum=a+b;cout<<"a+b="<<sum<<endl;return 0;}

运行结果：

//p7//求两个数的最大者#include <iostream>using namespace std;int max(int x,int y){int z;if(x>y)z=x;elsez=y;return z;}int main(){int a,b,m;cin>>a>>b;m=max(a,b);cout<<"max="<<m<<"\n";return 0;}

运行结果：

//p9//包含类的C++程序#include <iostream>using namespace std;class Student{private:int num;int score;public:void setdata(){cin>>num;cin>>score;}void display(){cout<<"num="<<num<<endl;cout<<"score="<<score<<endl;};};Student stud1,stud2;int main(){stud1.setdata();stud2.setdata();stud1.display();stud2.display();return 0;}

运行结果：