hdu 1002 A+B

 1 #include<iostream>
 2 #include<string.h>
 3 #include<math.h>
 4 #include<stdlib.h>
 5 #include<stdio.h>
 6 using namespace std;
 7 const int M=1005;
 8 void xsone(int a[],int b[],int lenz)
 9 {
10     for(int i=0;i<lenz;i++)
11     a[i]=a[i]+b[i];
12     int temp=0;
13     for(int i=0;i<lenz+1;i++)
14     {
15         a[i]+=temp;
16         temp=a[i]/10;
17         a[i]%=10;
18     }
19     int i;
20     for(i=lenz+1;i>=0;i--)
21     if(a[i]!=0)
22     break;
23     for(;i>=0;i--)
24     printf("%d",a[i]);
25     printf("\n");
26 }
27 int main()
28 {
29     //freopen("in.txt","r",stdin);
30     int n;
31     scanf("%d",&n);
32     for(int i=1;i<=n;i++)
33     {
34         char sa[M],sb[M];
35         memset(sa,0,sizeof(sa));
36         memset(sb,0,sizeof(sb));
37         scanf("%s %s",sa,sb);
38         int lena = strlen(sa);
39         int lenb = strlen(sb);
40         int lenz = lena>lenb ?lena :lenb;
41 
42         int a[M],b[M];
43         memset(a,0,sizeof(a));
44         memset(b,0,sizeof(b));
45         int j;
46         for(j=0;j<lena;j++)
47         a[lena-1-j]=sa[j]-‘0‘;
48         for(j=0;j<lenb;j++)
49         b[lenb-1-j]=sb[j]-‘0‘;
50         printf("Case %d:\n",i);
51         printf("%s + %s = ",sa,sb);
52         xsone(a,b,lenz);
53         if(i!=n)
54         printf("\n");
55     }
56     return 0;
57 }