1 #include<stdio.h>
2 #include<string.h>
3 int main()
4 {
5 char op1[1002],op2[1002];
6 int c,i,j,n,m,s1[1002],s2[1002],len1,len2,count;
7 count=1;
8 scanf("%d",&n);
9 m=n;
10 while(m--)
11 {
12 memset(s1,0,1002*sizeof(int));
13 memset(s2,0,1002*sizeof(int));
14 scanf("%s",op1);
15 scanf("%s",op2);
16 len1=strlen(op1);
17 len2=strlen(op2);
18 c=0;
19 for(i=len1-1;i>=0;i--)
20 s1[c++]=op1[i]-'0';
21 c=0;
22 for(i=len2-1;i>=0;i--)
23 s2[c++]=op2[i]-'0';
24 for(i=0;i<1002;i++)
25 {
26 s1[i]+=s2[i];
27 if(s1[i]>=10)
28 {
29 s1[i]-=10;
30 s1[i+1]++;
31 }
32 }
33 printf("Case %d:\n",count++);
34 printf("%s + %s = ",op1,op2);
35 for(i=1001;i>=0;i--)
36 if(s1[i])
37 break;
38 for(j=i;j>=0;j--)
39 printf("%d",s1[j]);
40 printf("\n");
41 if(count!=n+1)
42 printf("\n");
43 }
44 return 0;
45 }
