2429: 【C语言训练】计算一个整数N的阶乘
          Memory Limit:128 MB
          Time Limit:1.000 S
         
      
      
        
          Judge Style:Text Compare
          Creator:
      
      
          Submit:56
          Solved:37
      
Description
计算一个整数N的阶乘
Input
一个整数N, (0〈=N〈=12)
Output
整数N的阶乘.
Sample Input Copy
5Sample Output Copy
120