zoukankan      html  css  js  c++  java
  • PAT 甲级 1001 A+B Format (20)(20 分)

    1001 A+B Format (20)(20 分)

    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).

    Input

    Each input file contains one test case. Each case contains a pair of integers a and b where -1000000 <= a, b <= 1000000. The numbers are separated by a space.

    Output

    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.

    Sample Input

    -1000000 9
    

    Sample Output

    -999,991


    注意几个输出点:-991 991 1001 -1001

     1 #include<iostream>
     2 #include <sstream>
     3 #include<string>
     4 #include<stack>
     5 #include<typeinfo>
     6 
     7 using namespace std;
     8 
     9 int main()
    10 {
    11   int a,b,flag=0,temp=0;
    12   
    13   cin>>a>>b;
    14   
    15   a+=b;
    16   
    17   if(a<0)
    18   {
    19       flag=1;
    20       cout<<"-";
    21   }
    22   
    23   stringstream ss;
    24   ss<<a; 
    25   
    26   string str=ss.str();
    27   
    28   stack<char> s;
    29   
    30   for(int i=str.length()-1;i>=flag;--i)
    31   {
    32       s.push(str[i]);
    33       ++temp;
    34       
    35       if(temp%3==0 && i-1>=flag)
    36           s.push(',');
    37   }
    38   
    39   while(!s.empty())
    40   {
    41       cout<<s.top();
    42       s.pop();
    43   }
    44   
    45   cout<<endl;
    46   
    47   return 0;
    48 }
  • 相关阅读:
    bzoj3946
    bzoj3065
    bzoj1500
    bzoj1233
    bzoj1089
    bzoj1087
    bzoj1086
    if语句之猜拳
    if语句判断闰年、平年
    if语句判断身高体重是否标准
  • 原文地址:https://www.cnblogs.com/cdp1591652208/p/9354123.html
Copyright © 2011-2022 走看看