新手上路，请多关照！！

#include <bits/stdc++.h> 
using namespace std;
int main()
{
    int n;
    cin >> n;
    if(n == 1)
    {
        cout << "swim";
    }
    if(n == 3) 
    {
        cout << "program";
    }
    if(n == 5) 
    {
        cout << "read";
    }
    if(n == 6)
    {
        cout << "math";
    }
    if(n == 2 or n == 4 or n == 7)
    { 
        cout << "rest";
    }
    return 0;
}

C++

#include <iostream>
using namespace std;
int main(int argc, char *argv[]`)
{
    int playerinput;
    cin >> playerinput;
    if (n == 1) cout << "swim";
    if (n == 3) cout << "program";
    if (n == 5) cout << "read";
    if (n == 6) cout << "math";
    if (n == 2 or n == 4 or n == 7) cout << "rest";
    return 0
}

Pascal

program Main;
var
  playerinput: integer;
begin
  readln(playerinput);
  if playerinput = 1 then writeln('swim')
  else if playerinput = 3 then writeln('program')
  else if playerinput = 5 then writeln('read')
  else if playerinput = 6 then writeln('math')
  else if (playerinput = 2) or (playerinput = 4) or (playerinput = 7) then writeln('rest');
end

Python

playerinput = int(input())
if playerinput == 1:
    print('swim')
elif playerinput == 3:
    print('program')
elif playerinput == 5:
    print('read')
elif playerinput == 6:
    print('math')
elif playerinput in [2, 4, 7]:
    print('rest')

#include<iostream>
using namespace std;
int main()
{
    int a;
    cin >> a;
    if (a == 1)
    {
        cout << "swim";

    }
    else
    {
        if (a == 3)
        {
            cout << "program";
        }
        else
        {
            if (a == 5)
            {
                cout << "read";
            }
            else
            {
                 if (a == 6)
                {
                    cout << "math";
                }
                else
                {
                cout << "rest";
                }
            }
        }
    }
}

这题可以简化一下大括号，如果if语句下面只有一句话，只需要写在后面即可，上代码！

#include <bits/stdc++.h>
using namespace std;
int main()
{
    int a;
    cin >> a;
    if ((a / 10) < 10 && a % 2 == 0 && a / 10 > 0)
        cout << "Yes";
    else
        cout << "No";
    return 0;
}

#include <iostream> 
using namespace std; 
int main() 
{ 
    int a; 
    cin >> a; 
    if (a == 1)
    { 
        cout << "swim";
    }
    if (a == 3) 
    { 
    cout << "program";
    } 
    if (a == 5) 
    { 
        cout << "read"; 
    } 
    if (a == 6) 
    {
        cout << "math"; 
    } 
    else 
    { 
        cout << "rest"; 
    } 
    return 0; 
}
```</span>