prog9.cpp

来自「C++语言程序设计题典」· C++ 代码 · 共 53 行

#include <iostream.h>
#include <string.h>
#include <iomanip.h>
class student
{
	char name[10];
	int deg;
	char level[7];
	friend class process;  //说明友元类
public:
	student(char na[],int d)
	{
		strcpy(name,na);
		deg=d;
	}
};
class process
{
public:
	void trans(student &s)
	{
		if (s.deg>=90)
			strcpy(s.level,"优");
		else if (s.deg>=80)
			strcpy(s.level,"良");
		else if (s.deg>=70)
			strcpy(s.level,"中");
		else if (s.deg>=60)
			strcpy(s.level,"及格");
		else
			strcpy(s.level,"不及格");
	}
	void disp(student &s)
	{
		cout << setw(10) << s.name << setw(6) 
			<< s.deg << setw(8) << s.level << endl;	
	}
};
void main()
{
	student st[]={student("王华",78),student("李明",92),
		student("张伟",62),student("孙强",88)};
	process p;
	cout << "输出结果:" << endl;
	cout << setw(10) << "姓名" << setw(6) << "成绩" 
		<< setw(8) << "等级" << endl;
	for (int i=0;i<4;i++)
	{
		p.trans(st[i]);
		p.disp(st[i]);
	}
}