1 #include <stdio.h> 2 #include <string.h> 3  4 #define max 1010 5 char a[max], b[max]; 6  7 int main() 8 { 9     int i, k, s, c, T, len1, len2;10     scanf("%d", &T);11     for (k = 0; k < T; k++)12     {13         int A[max] = {0}, B[max] = {0};    14         scanf("%s %s", &a, &b);15         len1 = strlen(a);16         len2 = strlen(b);17         for (i = 0; i < len1; i++)18             A[i] = a[len1-i-1] - ‘0‘;19         for (i = 0; i < len2; i++)20             B[i] = b[len2-i-1] - ‘0‘;21         c = 0;22         for (i = 0; i < max; i++)  23         {24             s = A[i] + B[i] + c; 25             A[i] = s % 10;            26             c = s / 10;            27         }28         printf("Case %d:\n%s + %s = ", k+1, a, b); 29         for (i = max-1; i >= 0; i--)30         {31             if (A[i])32                 break;33         }34         for ( ; i >= 0; i--)35             printf("%d", A[i]);36         printf("\n");37         if (k < T - 1)38             printf("\n");39     }40     return 0;41 }