HDU1002 A+B Problem Ⅱ
#include <cstdio>
#include <cstring>
#include <string>
#include <iostream>
#include <cmath>
#include <algorithm>
using namespace std;
int main()
{
char chr1[1010],chr2[1010];
int t;
int len1,len2,len;
cin>>t;
for(int s=1;s<=t;s++){
if(s!=1) cout<<endl;
int i,j=0,k=0;
scanf("%s %s",chr1,chr2);
int a[1010]={0},b[1010]={0},c[1010]={0};
len1=strlen(chr1);
len2=strlen(chr2);
for(i=len1-1,j=0;i>=0;i--) a[j++]=chr1[i]-'0';
for(i=len2-1,k=0;i>=0;i--) b[k++]=chr2[i]-'0';
if(len1>len2) len=len1;
else len=len2;
int m=0;
for(i=0;i<len;i++)
{
int temp=a[i]+b[i]+m;
c[i]=temp%10;
m=temp/10;
}
if(a[i-1]+b[i-1]>=10) c[i]=1;
else {
c[i]=0;
i--;
}
printf("Case %d:
",s);
printf("%s + %s = ",chr1,chr2);
for(;i>=0;i--) cout<<c[i];
cout<<endl;
}
return 0;
}