1001 A+B Format (20分)
标签：wrap ram ble space nowrap pair input div html
Calculate a+b and output the sum in standard format -- that is, the digits must be separated into groups of three by commas (unless there are less than four digits).
Each input file contains one test case. Each case contains a pair of integers a and b where −. The numbers are separated by a space.
For each test case, you should output the sum of a and b in one line. The sum must be written in the standard format.
-1000000 9
-999,991
题解：这里所说的每三个数字中间添加一个‘，’是指从右边的第一个数字开始数，每三个数字添加一个‘，’。有时间的话还是要把那本《C++ prime plus》再看一遍，很多C++的基础语法都忘了=_=
#include<iostream>
using namespace std;
int main() {
int a, b;
cin >> a >> b;
string s = to_string(a+b);
int len = s.length();
for (int i = 0; i < len; ++i) {
cout << s[i];
if (s[i] == ‘-‘) continue;
if ((i + 1) % 3 == len % 3 && i != len - 1)
cout << ‘,‘;
}
cout << endl;
return 0;
}
标签：wrap ram ble space nowrap pair input div html
原文地址：https://www.cnblogs.com/ruruozhenhao/p/12093906.html
