hdu 1002

# include <stdio.h>
# include <string.h>
char a[1005],b[1005];
int d[1005],f[1005],g[1005];
int main ()
{
	int num,n,i;
	while(scanf("%d",&n)!=EOF)
	{
		 num=1;
		while(n--)
		{
			memset(a,0,sizeof(a));
			memset(b,0,sizeof(b));
			memset(d,0,sizeof(d));
			memset(f,0,sizeof(f));
			memset(g,0,sizeof(g));		
			scanf("%s %s",a,b);
			int lena = strlen(a);
			int lenb = strlen(b);
			int c=0;
			for(i=lena-1;i>=0;i--)
			{
				d[c++]=a[i]-'0';
			}
			c=0;
			for(i=lenb-1;i>=0;i--)
			{
				f[c++]=b[i]-'0';
			}
			if(lena<lenb)
				lena=lenb;
			int mark=0;
			for(i=0;i<=lena;i++)
			{
				g[i]=(d[i]+f[i]+mark)%10;
				if(d[i]+f[i]+mark>=10)
					mark=1;
				else
					mark=0;
			}
			printf("Case %d:\n",num);
			num++;
			printf("%s + %s = ",a,b);
			if(mark) printf("1");
			for(i=lena-1;i>=0;i--)
			{
				printf("%d",g[i]);

			}
			if(n!=0)
			printf("\n\n");
			else 
				printf("\n");
			
		}
	}
	return 0;
}

代码略丑  不喜勿喷