C++ Primer Plus 第六版第二章习题

Joy ·

更新时间:2024-11-14

· 647 次阅读

C++ Primer Plus 第六版第二章习题 2.7.1

#include 
using namespace std;
int main()
{
    cout<<"姓名：Thomas"<<endl;
    cout<<"地址：重庆市"<<endl;
    return 0;
}

2.7.2

#include 
using namespace std;
int main()
{
    int dis_long;
    int dis_yard;
    cout<<"please input the int distance value as long:"<>dis_long;
    dis_yard=dis_long*220;
    cout<<"you has input the distance: "<<dis_long<<" long,"<<" equal to "<<dis_yard<<" yard."<<endl;
    return 0;
}

2.7.3

#include 
using namespace std;
void fun_1();
void fun_2();
int main()
{
    fun_1();
    fun_1();
    fun_2();
    fun_2();
    return 0;
}
void fun_1()
{
    cout<<"Three blind mice"<<endl;
}
void fun_2()
{
    cout<<"See how they run"<<endl;
}

2.7.4

#include 
using namespace std;
int main()
{
    int age;
    cout<<"Please input your age:"<>age; //据cin>>a 中a的变量类型读取数据，遇到结束符（Space、Tab、Enter）就结束
    //cin.get();//cin.get() 与 cin.get(char ch)用于读取字符，他们的使用是相似的，即：ch=cin.get() 与 cin.get(ch)是等价的
    cout<<"Your age contains "<<age*12<<" months.";
    return 0;
}

2.7.5

#include 
using namespace std;
double cel_to_Fah(double Celsius)
{
    double Fahrenheit;
    Fahrenheit=1.8*Celsius+32.0;
    return Fahrenheit;
}
int main()
{
    double temp_Celsius;
    cout<<"Please enter a Celsius value:"<>temp_Celsius;
    cout<<temp_Celsius<<" degrees Celsius is "<<cel_to_Fah(temp_Celsius)<<" degrees Fahrenheit"<<endl;
    return 0;
}

2.7.6

#include 
using namespace std;
double lig_to_ast(double light_years)
{
    double astronomical;
    astronomical=63240*light_years;
    return astronomical;
}
int main()
{
    double light_years;
    cout<<"Please enter the number of light years:"<>light_years;
    cout<<light_years<<" light_years = "<<lig_to_ast(light_years)<<" astronomical units"<<endl;
    return 0;
}

2.7.7

#include 
using namespace std;
void print_time(int hour, int min)
{
    cout<<"Time "<<hour<<":"<<min<<endl;
}
int main()
{
    int ent_hour;
    int temp_hour;
    int ent_min;
    int temp_min;
    cout<<"Please enter the number of hours:"<>temp_hour;
    while (temp_hour>24||temp_hour<0)
    {
        cout<<"Wrong hours, please enter the number of hours again:"<>temp_hour;
    }
    ent_hour=temp_hour;
    cout<<"Please enter the number of minutes:"<>temp_min;
    while (temp_min>60||temp_min<0)
    {
        cout<<"Wrong minutes, please enter the number of minutes again:"<>temp_min;
    }
    ent_min=temp_min;
    print_time(ent_hour, ent_min);
    return 0;
}