hdu 1002.A + B Problem II 解题报告

题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=1002

题目意思：就是大整数加法。

　　两年几前做的，纯粹是整理下来的。

 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 }