C++程序练习集.doc

#include using namespace std;/*class Clockpublic:void SetClock(int h=0,int m=0,int s=0)hour=h;minute=m;second=s;void ShowClock()couthour:minute:secondendl;private:int hour;int minute;int second;int main()Clock myClock;cout默认时间为:endl; myClock.SetClock();myClock.ShowClock(); cout现在时间:endl;myClock.SetClock(8,30,30);myClock.ShowClock();return 0;#include using namespace std;/Point类声明class Pointpublic:/设置点坐标void setPoint(double x0,double y0);/显示点坐标void showPoint();private:double x;/横坐标double y;/纵坐标;void Point:setPoint(double x0=0,double y0=0)x=x0;y=y0;void Point:showPoint()cout点的坐标为:(x,y)endl;int main()Point p1,p2;double x,y;p1.setPoint(1,2);p1.showPoint();coutxy;p2.setPoint(x,y);p2.showPoint();return 0;#include using namespace std;class Point public:Point(int x0=0,int y0=0):x(x0),y(y0)CountP+;Point(Point&p):x(p.x),y(p.y)CountP+;Point()CountP-;static int getCount()return CountP;private:int x;int y;static int CountP;int Point:CountP=0;int main()Point p1(0,3),p2(p1);coutp1.getCount()endl;coutp2.getCount()endl;coutPoint:getCount()endl;return 0;/功能：定义复数类， 给出构造函数、两个复数相加#include using namespace std;class Complexpublic: Complex(double r=0,double i=0)/构造函数real=r;imag=i;void show()/显示函数cout(real,imag)endl; void add(Complex C1,Complex C2)/函数加法real=C1.real+C2.real;imag=C1.imag+C2.imag;private:double real;/实部double imag;/虚部;int main()Complex C1(1,2),C2(2,3),C3;C3.add(C1,C2);cout两复数之和为:;C3.show();return 0;/名称：0402/功能：定义复数类， 给出构造函数、两个复数相加、两个复数相减、以(a,b)格式输出的成员函数/作者：薛小超/日期：2012.04.13/*#include using namespace std;class Complexpublic: Complex(double r=0,double i=0);/构造函数void set(double r,double i);/设置函数void show();/显示函数 void add(Complex C1,Complex C2);/函数加法void sub(Complex C1,Complex C2);/函数减法private:double real;/实部double imag;/虚部;Complex:Complex(double r,double i)/构造函数real=r;imag=i;void Complex:set(double r,double i)/设置函数real=r;imag=i;void Complex:show()/显示函数cout(real,imag)endl;void Complex:add(Complex C1,Complex C2)/函数加法real=C1.real+C2.real;imag=C1.imag+C2.imag;void Complex:sub(Complex C1,Complex C2)/函数减法real=C1.real-C2.real;imag=C1.imag-C2.imag;int main()Complex C1(0,0),C2(0,0),C3(0,0);double r1,i1;double r2,i2;coutr1i1;cout第一个复数为:;C1.set(r1,i1);C1.show();coutr2i2;cout第二个复数为:;C2.set(r2,i2);C2.show();cout两复数之和为:;C3.add(C1,C2);C3.show();cout两复数之差为:;C3.sub(C1,C2);C3.show();return 0;#include using namespace std;void Swap(int& a,int& b)int t;t=a;a=b;b=t;inline int add(int m,int n)return m+n;inline double max(double a,double b)return a=b?a:b;int main()int x(5);int y(10); double a=10.5, b=2.4;coutx=x y=yendl;Swap(x,y);coutx=x y=yendl;coutmax(a,b)endl;coutadd(x,y)endl;return 0;#include using namespace std;long sum (int n)if (n=1)return 1;else return sum(n-1)+n;int main ()int n;coutn;cout1+.+n=sum(n)endl; return 0;#include using namespace std;int sum (int n)int i;int s=0;for (i=1;i=n;i+)s+=i;return s;int main ()int n;coutn;cout1+.+n=sum(n)endl; return 0;#include using namespace std;long fac(int n) long f; if (n0) coutn0,data error!endl; else if (n=0) f=1; else f=fac(n-1)*n; return f;int main()int x;coutx;coutx!=fac(x)endl;return 0;/名称：求圆柱体的表面积和体积/功能：求圆柱体的表面积和体积/作者：薛小超/日期：2012.5.4/*#include using namespace std;const double PI(3.14);/声明常量圆周率PI(3.14)void compute (double r,double h,double&s,double&v)/求圆柱体的表面积和体积函数s=2*PI*r*(r+h);/s为圆柱体的表面积，r为圆柱体的体积，h为圆柱体高v=PI*r*r*h;/v为圆柱体的体积int main()double r=1,h=2,s,v;/s为圆柱体的表面积，r为圆柱体的体积，h为圆柱体高，v为圆柱体的体积compute(r,h,s,v);/圆柱体的表面积和体积函数实现 cout圆柱体的表面积为:;coutsendl;/输出圆柱体的表面积cout圆柱体的体积为:;coutvendl;/输出圆柱体的体积return 0;#include const double PI(3.14);using namespace std;class Circleprivate:/半径double radius;public:/设置半径void setCircle(double r=0);/返回面积double getArea();void Circle:setCircle(double r)radius=r;double Circle:getArea()return PI*radius*radius;int main()Circle cir1;cir1.setCircle(2);cout圆的面积为:cir1.getArea()endl;return 0;#include using namespace std;void Swap(int& a,int& b)int t;t=a;a=b;b=t;int main()int x(5);int y(10);coutx=x y=yendl;Swap(x,y);coutx=x y=yendl;return 0;/输入三角形的三条边，求其各角度#include #include using namespace std;const double PI=3.14;void outputAngle(double a,double b,double c);int main()double a;double b;double c;coutabc;outputAngle(a,b,c);return 0;void outputAngle(double a,double b,double c)double angleA;double angleB;double angleC;angleA=acos(b*b+c*c-a*a)/(2*b*c);angleB=acos(a*a+c*c-b*b)/(2*a*c);angleC=PI-angleA-angleB;cout三边对应的角度为:endl;coutangleA*180/PIendl;coutangleB*180/PIendl;coutangleC*180/PIendl;#include using namespace std;int main()/字母的个数int a=0;/数字的个数int b=0;/输入的一个字符char x;coutx;/结束符if(x=#)break;/统计字母字符if(x=A&x=a&x=0&x=9)b+;cout字母字符:aendl;cout数字字符:bendl;return 0;#includeusing namespace std;double countsalary(double);int main()int hours;couthours;cout员工工资为:countsalary( hours)endl;return 0;double countsalary(double hours)const double HOURSRATE=50;double salary;/计算员工工资if(hours=40)salary=hours* HOURSRATE;elsesalary=(hours-40)*1.5* HOURSRATE+40* HOURSRATE;return salary;#includeusing namespace std;double countsalary(double hours)const double HOURSRATE=50;double salary;/计算员工工资if(hours=40)salary=hours* HOURSRATE;elsesalary=(hours-40)*1.5* HOURSRATE+40* HOURSRATE;return salary;int main()int hours;couthours;cout员工工资为:countsalary( hours)endl;return 0;#includeusing namespace std;double countsalary(double hours,double hoursrate)double salary;if(hours=40)salary=hours*hoursrate;elsesalary=(hours-40)*1.5*hoursrate+40*hoursrate;return salary;int main() int hours,hoursrate;couthours;couthoursrate;cout员工工资为:countsalary( hours,hoursrate)endl;return 0;/名称：00002/功能：编程实现求二元一次方程的根/作者：薛小超/日期：201236/*#include#includeusing namespace std;int main()double a,b,c;double x1,x2;/方程输入coutabc;/方程求解double delta=b*b-4*a*c;if(delta0) /delta0cout方程无实数解endl;else if(delta=0)/delta=0cout方程的根为：(-b)/(2*a)endl;elsex1=(-b+sqrt(b*b-4*a*c)/(2*a);x2=(-b-sqrt(b*b-4*a*c)/(2*a);cout方程的根为：x1=x1 ,x2=x2endl;return 0;/名称：00004/功能：判断成绩的档次(switch/case练习)/作者：薛小超/日期：201236#includeusing namespace std;int main()char grade;coutgrade;switch(grade)casea:cout85_100endl;break;caseb:cout75_84endl; break;casec:cout60_74endl; break;cased:cout0_60endl; b