hdoj 1002（C实现）

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Problem Description:I have a very simple problem for you. Given two integers A and B, your job is to calculate the Sum of A + B.

Input:The first line of the input contains an integer T(1<=T<=20) which means the number of test cases. Then T lines follow,

each line consists of two positive integers, A and B. Notice that the integers are very large, that means you should

not process them by using 32-bit integer. You may assume the length of each integer will not exceed 1000.

Output:For each test case, you should output two lines. The first line is "Case #:", # means the number of the test case.

The second line is the an equation "A + B = Sum", Sum means the result of A + B. Note there are some spaces int the

equation. Output a blank line between two test cases.

Sample Input:2

1 2

112233445566778899 998877665544332211

Sample Output:Case 1:

1 + 2 = 3

Case 2:

112233445566778899 + 998877665544332211 = 1111111111111111110

#include <stdio.h>#include <string.h>int main(){char a;int mark,i,j,T,Case = 0,lenA,lenB,lenC;char A[1001],B[1001],C[1002];if(scanf("%d",&T)!=EOF || T==1 || T==20 || T<20 && T>1){for(j = 1;j < T+1;j ++){if(j!=1)          //就是这个点，让我Presentation Error了三次，我的天。太粗心了，以后得注意printf("\n");mark = 0;memset(A,0,1001);memset(B,0,1001);memset(C,0,1002);scanf("%s %s",A,B);lenA=strlen(A);lenB=strlen(B);lenC=0;for(i = 0; i < lenA; i++)if(A[i]<'0' || A[i]>'9'){mark = 1;break;}for(i = 0; i < lenB; i++)if(B[i]<'0' || B[i]>'9'){mark = 1;break;}if(mark){T++;printf("\n");continue;}printf("Case %d:\n%s + %s = ",++Case, A, B);for(i = 0; i < lenA/2; i++){a = A[i];A[i] = A[lenA-i-1];A[lenA-i-1] = a;}for(i = 0; i < lenB/2; i++){a = B[i];B[i] = B[lenB-i-1];B[lenB-i-1] = a;}i = 0;while(i<lenA && i<lenB){C[i] += A[i] + B[i] - 96;if(C[i] > 9) {C[i] = C[i]-10;C[i+1] += 1;}lenC++;i++;}if(i < lenA)while(i <lenA){C[i] += A[i] - 48;i++;lenC++;}elsewhile(i < lenB){C[i] += B[i] - 48;i++;lenC++;}for(i = lenC-1; i > -1; i--)printf("%c",C[i]+48);printf("\n");}}return 0;}

VC6运行效果图

*参考资料 http://www.cnblogs.com/JXNU-WuYeqi/p/3485244.html

就是在这里找到了我错误的原因

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