PAT甲级——A1065 A+B and C (64bit)

Given three integers A, B and C in [−], you are supposed to tell whether A+B>C.

Input Specification:

The first line of the input gives the positive number of test cases, T (≤). Then T test cases follow, each consists of a single line containing three integers A, B and C, separated by single spaces.

Output Specification:

For each test case, output in one line Case #X: true if A+B>C, or Case #X: false otherwise, where Xis the case number (starting from 1).

Sample Input:

3
1 2 3
2 3 4
9223372036854775807 -9223372036854775808 0

Sample Output:

Case #1: false
Case #2: true
Case #3: false

 #include <iostream>
 using namespace std;
 long long N, A, B, C, sum;
 int main()
 {
     cin >> N;
     for (int i = ; i <= N; ++i)
     {
         cin >> A >> B >> C;
         sum = A + B;
         if (A >  && B >  && sum < )//正溢出
             cout << "Case #" << i << ": " << "true" << endl;
         else if (A <  && B <  && sum >= )//负溢出
             cout << "Case #" << i << ": " << "false" << endl;
         else if(sum>C)
             cout << "Case #" << i << ": " << "true" << endl;
         else
             cout << "Case #" << i << ": " << "false" << endl;
     }
     return ;
 }