01-1-hello_world.cpp

#include <iostream>

int main()
{
    std::cout << "Hello, world!" << std::endl;
  
    return 0;
}

01-2-hello_world.cpp

#include <iostream>

using namespace std;

int main()
{
    cout << "Hello, world!" << endl;
    
    return 0;
}

01-3-hello_world.cpp

#include <iostream>

using namespcae std;

int main(int argc, char **argv)
{
  cout << "Hello, world!" << endl;
  
  return 0;
}

02-variable.cpp

#include <iostream>

using namespace std;

int main()
{
  int n;
  n = 3;
  n = n + 2;
  
  cout << n << endl;
  
  return 0;
}

03-if.cpp

#include <iostream>

using namespace std;

int main()
{
  int n = 2;
  
  if(n % 2 == 0)
  {
    cout << n << "は偶数" << endl;
  }
  else
  {
    cout << n << "は奇数" << endl;
  }
  
  return 0;
}

04-else_if.cpp

#include <iostream>

using namespace std;

int main()
{
  int number = 13;
  
  if(number > 10)
    cout << number << "は10より大きい" << endl;
  else if(number < 10)
    cout << number << "は10よりちいさい" << endl;
  else
    cout << number << "は10に等しい" << endl;
  
  return 0;
}

05-for.cpp

#include <iostream>

using namespace std;

int main()
{
  for(int i = 0;i < 10;i++)
  {
    cout << i << endl;
  }
  
  return 0;
}

06-fizzbuzz.cpp

#include <iostream>

using namespace std;

int main()
{
  for(int i = 0;i < 100;i++)
  {
    if(i % 15 == 0)
      cout << "FizzBuzz" << endl;
    else if(i % 5 == 0)
      cout << "Buzz" << endl;
    else if(i % 3 == 0)
      cout << "Fizz" << endl;
    else
      cout << i << endl;
  }
  
  return 0;
}

  

07-stdin.cpp

#include <iostream>

using namespace std;

int main()
{
  int n;
  cin >> n;
  
  n = n * 2;
  
  cout << n << endl;
  
  return 0;
}

08-array.cpp

#include <iostream>

using namespace std;

int main()
{
	int a[4];

	a[0] = 334;
	a[1] = 3 + 3 + 4; // 10
	a[2] = 3 * 3 * 4; // 36
	a[3] = 226;

	cout << a[0] << "," << a[2] << endl;

	for ( int i = 0; i < 4; i++ )
	{
		cout << a[i] << endl;
	}

    return 0;
}

09-enshu_array.cpp

#include <iostream>

using namespace std;

int main()
{
	int a[10];

	for ( int i = 0; i < 10; i++ )
	{
		cin >> a[i];
	}

	cout << "偶数: ";
	for ( int i = 0; i < 10; i++ )
	{
		if ( a[i] % 2 == 0 )
		{
			cout << a[i] << " ";
		}
	}
	cout << endl;

	cout << "奇数: ";
	for ( int i = 0; i < 10; i++ )
	{
		if ( a[i] % 2 != 0 )
		{
			cout << a[i] << " ";
		}
	}
	cout << endl;

	return 0;
}