Cprimerplus编程练习答案

C++p r i m e r p l u s 编程练习答案注：本人暑假正在看这本书，顺便就把题目做了，均经过了编译器通过，无注释。

第二章1：#include<iostream>#define max 10using namespace std;void main(){char name[max],dizhi[max];cout<<"请输入姓名: ";cin>>name;cout<<"请输入地址: ";cin>>dizhi;cout<<"姓名--->"<<name<<"\t地址--->"<<dizhi<<endl;}2：#include<iostream>using namespace std;void main(){long juli;cout<<"请输入距离long(1 long 为220码):";cin>>juli;cout<<"按照您输入的距离是:"<<juli*220<<"码"<<endl; }3：#include<iostream>using namespace std;void blind(){cout<<"Three blind mice\n";}void run(){cout<<"See how they run\n";}void main(){for(int i=0;i<2;i++)blind();for(int j=0;j<2;j++)run();}4：#include<iostream>using namespace std;void month(int age){cout<<"该年龄一共包含"<<age*12<<"个月！\n"; }void main(){int age;cout<<"请输入年龄:";cin>>age;month(age);}5：#include<iostream>using namespace std;double fahrenheit(double celsius){return *celsius+;}void main(){double celsius;cout<<"please enter a celsius value:";cin>>celsius;cout<<celsius<<" degrees celsius is "<<fahrenheit(celsius)<<" degrees fahrenheit.\n";}6：#include<iostream>using namespace std;double astronomical(double light){return 63240*light;}void main(){double light;cout<<"Enter the number of light years:";cin>>light;cout<<light<<" light years = "<<astronomical(light)<<" astronomical units.\n";}7：#include<iostream>using namespace std;void display(int hours,int minutes){cout<<"Time: "<<hours<<":"<<minutes<<endl;}void main(){int hour,minute;cout<<"please input the time of hour:";cin>>hour;cout<<"please input the time of minute:";cin>>minute;display(hour,minute);}第三章1：#include<iostream>using namespace std;const float danwei=;void iswap(int cun){cout<<"您的身高为: "<<cun*danwei<<" 英尺!"<<endl; }void main(){int cun;cout<<"请输入英寸单位的身高(整数):_______\b\b\b\b\b\b";cin>>cun;iswap(cun);}2：#include<iostream>using namespace std;const double yingchi=12;const double bang=;const double memter=;void caculate(double chi,double cun,double weight){double BMI;double yingcun,mi,qianke;yingcun=cun+chi*yingchi;mi=yingcun*memter;qianke=weight/bang;BMI=qianke/(mi*mi);cout<<"您的BMI值为: "<<BMI<<endl;}void main(){double chi,cun,weight;cout<<"请输入身高(以几英尺几英寸方式输入): ";cin>>chi>>cun;cout<<"请输入体重(以磅为单位): ";cin>>weight;caculate(chi,cun,weight);}3：#include<iostream>using namespace std;void main(){double degrees,minutes,seconds,sum;cout<<"Enter a latitude in degrees,minutes,and seconds:"<<endl;cout<<"First,enter the degrees: ";cin>>degrees;cout<<"Next,enter the minutes of arc: ";cin>>minutes;cout<<"Finally,enter the seconds of arc: ";cin>>seconds;sum=degrees+minutes/60+seconds/3600;cout<<degrees<<" degrees,"<<minutes<<" minutes,"<<seconds<<" seconds= "<<sum<<" degrees."<<endl;}4：#include<iostream>using namespace std;const long m=60;const long h=60;const long d=24;int sumday(long seconds){long hour,minute;minute=seconds/m;hour=minute/h;return hour/d;}int sumhour(long seconds,int day){long minute;seconds=seconds-day*d*h*m;minute=seconds/m;return minute/h;}int summinute(long seconds,int day,int hour) {seconds=seconds-(day*d*h*m+hour*h*m);return seconds/m;}int sumsecond(long seconds,int day,int hour,int minute){return seconds=seconds-(day*d*h*m+hour*h*m+minute*m); }void main(){long seconds;int day,hour,minute,second;cout<<"Enter the number of seconds: ";cin>>seconds;day=sumday(seconds);hour=sumhour(seconds,day);minute=summinute(seconds,day,hour);second=sumsecond(seconds,day,hour,minute);cout<<seconds<<" seconds = "<<day<<" days,"<<hour<<" hours,"<<minute<<" minutes,"<<second<<" seconds."<<endl; }5：#include<iostream>using namespace std;void main(){double world,us;cout<<"Enter the world's population: ";cin>>world;cout<<"Enter the population of the us: ";cin>>us;double bilv;bilv=us/world;cout<<"The population of the us is "<<bilv<<"% of the world population."<<endl;}6：#include<iostream>using namespace std;void main(){float memter,jialun;cout<<"以美国风格还是欧洲风格显示耗油量？m为美国，o为欧洲!"<<endl;cout<<"请输入(m或o):";char c;cin>>c;if(c=='m'){cout<<"请输入驱车里程(英里):";cin>>memter;cout<<"请输入使用汽油量(加仑):";cin>>jialun;cout<<"汽车耗油量为:"<<memter/jialun<<"mpg."<<endl;}else{cout<<"请输入驱车里程(公里):";cin>>memter;cout<<"请输入使用汽油量(升):";cin>>jialun;float ofg;ofg=(100*jialun)/memter;cout<<"汽车耗油量为:"<<ofg<<"L/100Km."<<endl;}}7：include<iostream>using namespace std;void main(){cout<<"请输入欧洲风格的汽车耗油量(每100公里消耗的汽油量(升)):";float ofg;cin>>ofg;float jialun;jialun=ofg/;float haoyou;haoyou=jialun;cout<<"转换成美国风格的耗油量(一加仑的里程，mpg):"<<haoyou<<"mpg."<<endl;}第四章待我上传。