Primer_Five

#include <iostream>using namespace std;int main(){    int num_1,num_2,i,add=0;    cout << "Please enter the first numble : "<<endl;    cin >> num_1;    cout << "Please enter a number greater than the first number:"<<endl;    cin >> num_2;    for(i=num_1;i<=num_2;i++)    {        add+=i;    }    cout << "The result is :"<<add<<endl;    return 0;}

#include <iostream>using namespace std;int main(){    int num,add=0;    while (num!=0)    {        cout << "please enter numble,If you want to end input, enter 0:" << endl;        cin >> num;        add+=num;        cout << "All the accumulated input is :"<<add<<endl;    }    return 0;}

#include <iostream>using namespace std;int main(){    float Dap_Interest=0,Cleo_Interest=0;    int i=0;    do    {        Dap_Interest+=100*0.1;        Cleo_Interest+=((100+Cleo_Interest)*0.05);        ++i;    }    while (Dap_Interest>Cleo_Interest);    cout << "After the "<<i<<" year,the interest of Cleo is greater than Daphne."<<endl;    return 0;}

#include <iostream>#include <string>using namespace std;struct car{    string manu_f;    int year;};int main(){    int n,i;    cout << "How many cars do you wish to catalog? "<<endl;    cin >> n;    cin.get();    car *car_n = new car[n];    for(i=0;i<n;i++)    {        cout<<"Cae #"<<i+1<<":"<<endl;        cout<<"Please enter the make:";        getline(cin,car_n[i].manu_f);        cout <<endl;        cout << "Please enter the year made :";        cin >> car_n[i].year;        cin.get();        cout << endl;    }    cout << "Here is your collection:"<<endl;    for(i=0;i<n;i++)    {        cout <<car_n[i].year<<" "<<car_n[i].manu_f<<endl;    }    return 0;}

//数字输入之后要在后面加上cin.get()，不然下一个输入会直接读取上一次输入数字后留下的终止符。

#include <iostream>#include <cstring>using namespace std;int main(){    const int Size=100;    char word[Size];    int i=0;    cout << "Enter words (to stop,type the word done):";    while (cin >> word&&strcmp(word,"done"))    {       ++i;    }    return 0;}