#include <iostream>
#include <string>
#include <array>
using namespace std;

//practice1
void p5_1(void)
{
    int number1=0;
    int number2=0;
    int sum=0;
    
    cout<<"enter the first number: ";
    cin>>number1;
    
    cout<<"enter the last number: ";
    cin>>number2;
    
    for (int i = number1; i<=number2; i++)
    {
        sum+=i;
    }
    
    cout<<"the sum is: "<<sum<<endl;
}

//practice2
const int ArSize=100;
void p5_2(void)
{
    array<long double, ArSize+1> factorials;
    factorials[0]=factorials[1]=1.0;
    for (int i = 2; i<=ArSize; i++)
    {
        factorials[i]=i*factorials[i-1];
    }
    for (int i=0; i<=ArSize; i++)
    {
        cout<<i<<"!="<<factorials[i]<<endl;
    }
    return;
}

//practice3
void p5_3(void)
{
    int sum=0;
    int num=0;
    while (1) {
        cout<<"enter a num(0 to exit):";
        cin>>num;
        if (num==0){
            break;
        }
        sum+=num;
        cout<<"the sum is "<<sum<<endl;
    }
    cout<<"done"<<endl;
}

//practice4
void p5_4(void)
{
    double Daphne_account=100;
    double Cleo_account=100;
    int year=0;
    while (Daphne_account>=Cleo_account) {
        year++;
        Cleo_account=Cleo_account+Cleo_account*0.05;
        Daphne_account+=10;
    }
    cout<<"after "<<year<<"years. "<<"Cleo's account is "<<Cleo_account<<".Daphne's account is "<<Daphne_account<<endl;
}

//practice5
void p5_5(void)
{
    string month[12]={"Janurary", "Feburary", "March", "April", "May", "June", "July", "August", "September", "October", "November", "Decmber"};
    int sell[12];
    int total_sales=0;
    
    cout << "Enter the sales of book <C++ for Fools> each month: " << endl;
    for (int i=0; i<12; i++){
        cout<<month[i]<<":";
        cin>>sell[i];
        total_sales+=sell[i];
        
    }
    for (int i=0; i<12; i++){
        cout<<month[i]<<": "<<sell[i]<<endl;
    }
    return;
}

//practice 6
void p5_6(void){
    string month[12] = { "January", "February", "March", "April", "May", "June", "July", "August", "Septempber", "October", "November", "December" };
    unsigned int sell[3][12]={0};
    unsigned int total_sales[3]={0};
    
    for (int i=0; i<3; i++){
        cout<<"enter "<<i+1<<"year sales of book each months: "<<endl;
        for (int j=0; j<12; j++){
            cout<<month[j]<<": ";
            cin>>sell[i][j];
            total_sales[i]+=sell[i][j];
        }
    }
    for (int i=0; i<3; i++){
        cout<<i+1<<" year total sales of book: "<<total_sales[i]<<endl;
    }
    cout<<"all sales: "<<total_sales[0]+total_sales[1]+total_sales[2]<<endl;
}

//pratice 7
struct car
{
    string company;
    int pro_year;
};
void p5_7(void)
{
    unsigned int size = 0;
    cout << "How many cars do you wish to catalog? ";
    cin >> size;
    cin.get();
    
    struct car *pcar = new struct car[size];
    for (unsigned int i = 0; i < size; i++)
    {
        cout << "Car #" << i + 1 << ":" << endl;
        cout << "Please enter the make: ";
        getline(cin, pcar[i].company);
        
        cout << "Please enter the year make: ";
        cin >> pcar[i].pro_year;
        cin.get();
    }
    
    cout << "Here is your collection:" << endl;
    for (unsigned int i = 0; i < size; i++)
    {
        cout << pcar[i].pro_year << " " << pcar[i].company << endl;
    }
}

//practice 8
void p5_8(void){
    unsigned int n_word=0;
    char input[128];
    
    cout<<"enter words (to stop type the word done)"<<endl;
    while (cin>>input) {
        if (strcmp(input, "done")){
            n_word++;
        }
        else
            break;
    }
    
    cout<<"you enter a total of "<<n_word<<" words"<<endl;
}

//practice 9
void p5_9(void){
    unsigned int n_word=0;
    string input;
    
    cout<<"enter words (to stop type the word done)"<<endl;
    while (cin>>input){
        if (input!="done"){
            n_word++;
    }
        else
            break;

    }
    cout<<"you enter a total of "<<n_word<<" words"<<endl;
}

//practice 10
void p5_10(void){
    unsigned int row=0;
    cout<<"enter the number of row: ";
    cin>>row;
    
    for(unsigned int i=0;i<row;i++){
        for (unsigned int j=i;j<row;j++){
            cout<<".";
        }
        for (unsigned int j=0; j<i; j++){
            cout<<"*";
        }
        cout<<endl;
    }
}

int main(int argc, char **argv){
    p5_10();
    while (getchar());
    return 0;
}