I have a very simple problem for you. Given two integers A and B, your job is to calculate the Sum of A + B.
A,B must be positive.
输入 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. 输出 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. 样例输入 2 1 2 112233445566778899 998877665544332211 样例输出 Case 1: 1 + 2 = 3 Case 2: 112233445566778899 + 998877665544332211 = 1111111111111111110 #include<iostream> #include<stdio.h> #include<string.h> using namespace std; int main() { int t; int la,lb; int Case=1; scanf("%d",&t); while(t--) { int j,sum; char a[1100],b[1100]; int an[1100]={0},bn[1100]={0}; int ans[1100]={0}; scanf("%s %s",a,b); la=strlen(a); lb=strlen(b); j=1; for(int i=la-1;i>=0;i--) an[j++]=a[i]-'0'; j=1; for(int i=lb-1;i>=0;i--) bn[j++]=b[i]-'0'; sum=0; j=1; for(int i=1;i<=((la>lb)?la:lb);i++) { sum+=an[i]+bn[i]; ans[j++]=sum; sum/=10; } ans[j]=sum; printf("Case %d:\n",Case++); printf("%s + %s = ",a,b); for(int i=((sum==0)?(j-1):j);i>=1;i--) { printf("%d",ans[i]); } printf("\n"); } return 0; }