## 題目清單

## Part 1. 練習題解答

### 1. Quiz 1: Hello World!

#include <iostream>
using namespace std;
int main(){
        cout << "Hello world!";
        return 0;
}

### 2. Quiz 2: cout 練習

#include <iostream>
using namespace std;
int main(){
	cout << "I'm from"<< endl;
	cout << "Team 0!";
	return 0;
}

### 3. Quiz 3: 輸入三角形邊長

#include <iostream>
using namespace std;
int main(){
	int a, b, c;
	cin >> a >> b >> c;
	cout << "Side 1: " << a << '\n';
	cout << "Side 2: " << b << '\n';
	cout << "Side 3: " << c << '\n';
	return 0;
}

### 4. Quiz 4: 計算金字塔的秘密數值

#include <iostream>
using namespace std;
int main(){
	double a, b, c;
	cin >> a >> b >> c;
	cout << (a + b + c) << '\n';
	cout << (a * b * c) << '\n';
	cout << (a + b + c) / 3 << '\n';
	return 0;
}

### 5. Quiz 5: 這是一座直角金字塔嗎？

#include <iostream>
using namespace std;
int main(){
	int a, b, c;
	cin >> a >> b >> c;
	if(a * a + b * b == c * c){
		cout << "Right triangle pyramid.";
	}
	else{
		cout << "Not a right triangle pyramid.";
	}
	return 0;
}

### 6. Quiz 6: 這是哪種神秘金字塔？

#include <iostream>
using namespace std;
int main(){
	int a, b, c;
	cin >> a >> b >> c;
	if(a * a + b * b == c * c){
		cout << "Right triangle pyramid.";
	}
	else if(a * a + b * b > c * c){
		cout << "Acute triangle pyramid.";
	}
	else{
		cout << "Obtuse triangle pyramid.";
	}
	return 0;
}

### 7. Quiz 7: 金字塔數據庫

#include <iostream>
using namespace std;
int main(){
	int a[2][3] = {0};
	cin >> a[0][0] >> a[0][1] >> a[0][2];
	cin >> a[1][0] >> a[1][1] >> a[1][2];
	
	cout << "Pyramid 1: " << (a[0][0] + a[0][1] + a[0][2]) << '\n';
	cout << "Pyramid 2: " << (a[1][0] + a[1][1] + a[1][2]) << '\n';
	return 0;
}

### 8. Quiz 8: 連加
#### while

#include <iostream>
using namespace std;
int main(){
    int sum = 0;
    int a = 1;
    while(a <= 1000){
        sum += a;
        a++;
    }
    cout << "1+2+3+...+1000 = " << sum; 
    return 0;
}

#### for

#include <iostream>
using namespace std;
int main(){
    int sum = 0;
    for(int i = 1; i <= 1000; i++){
        sum += i;
    }
    cout << "1+2+3+...+1000 = " << sum; 
    return 0;
}

### 9. Quiz 9: 輸出長方形

#include <iostream>
using namespace std;
int main(){
    int n, m;
    cout << "Enter m = ";
    cin >> m;
    cout << "Enter n = ";
    cin >> n;
    for(int i = 0; i < m; i++){
        for(int j = 0; j < n; j++){
            cout << '*';
        }
        cout << endl;
    }
	return 0;
}