import random
while True:
    player = input("輸入：|剪刀（0）| 石頭（1）| 布（2）| 退出(q)|：\n")
    if(player == "q" or player == "0" or player == "1" or player == "2"):  
        if player == "q":
            print("歡迎再來\n")
            break
        else:
            player = int(player)
            computer = random.randint(0,2)
            if (computer > player):
                print("你輸了！再來！\n")
            elif (computer == player):
                print("平局\n")
            else:
                print("你贏了！\n")
    else:
        print("輸入錯誤!重新輸入\n")
        continue 
 

python實現：如下圖形

*
**
***
****
*****
***
**
*

num = 1
while True:
    if num == 9: break
    else:
        temp = num
        if temp <=5:
            while temp:
                temp = temp - 1
                print("*",end="")
            print("\n")
        else:
            temp = 9 - temp
            while temp:
                temp = temp - 1
                print("*",end="")
            print("\n")
    num += 1
 

    *
   ***
  *****
 *******
*********

python程式碼：

num = input("Input a number:\n")
num = int(num)
for n in range(0,num):
    for i in range(0,num-n-1):
        print(" ",end="")
    for j in range(0,2*n+1):
        print("*",end="")
    print("\n")

#include<iostream>
#include<stdio.h>
using namespace std;

class Shape
{
public:
    Shape(int num):len(num){}
    ~Shape(){}
    void painShape();
private:
    int len;
};

void Shape::painShape()
{
    for(int i = 0;i < len; i++){
        for(int j = 0;j < len-i-1;j++){
            printf(" ");
        }
        for(int k = 0 ; k < 2*i+1;k++){
            printf("*");
        }
        printf("\n");
    }
}
int main()
{
    Shape shape(5);
    shape.painShape();

    return 0;
}
 

         *
        * *
       * * *
      * * * *
     * * * * *
    * * * * * *
   * * * * * * *
  * * * * * * * *
 * * * * * * * * *
* * * * * * * * * *

python程式碼：

k = 1;
num = input("Input a number:\n")
num = int(num)
for n in range(0,num):
    for i in range(0,num-n-1):
        print(" ",end="")
    for j in range(0,2*n+1):
        if k == 1:
            k = 0;
            print("*",end="")
        else:
            k = 1
            print(" ",end="")
    k = 1
    print("\n")