HDOJ 题目1042 N！大数

N!

Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 53495    Accepted Submission(s): 15120

Problem Description

Given an integer N(0 ≤ N ≤ 10000),your task is to calculate N!

 

Input

One N in one line,process to the end of file.

 

Output

For each N,output N! in one line.

 

Sample Input

  
  

   
   1
2
3
  
  

 

Sample Output

  
  

   
   1
2
6
  
  

 

Author

JGShining（极光炫影）

题目大意：计算大数的阶乘

要点：数组开大些，，，，，又开小了，wa了一次

ac代码

#include<stdio.h>
int main()
{
	int n;
	while(scanf("%d",&n)!=EOF)
	{
		int i,a[100200],c,d=1,tc,j;
		a[1]=1;
		for(i=1;i<=n;i++)
		{
			for(j=1,c=0;j<=d;j++)
			{
				tc=a[j]*i+c;
				a[j]=tc%10;
				c=tc/10;
			}
			while(c)
			{
				a[++d]=c%10;
				c/=10;
			}
		}
		for(i=d;i>=1;i--)
			printf("%d",a[i]);
		printf("\n");
	}
}