fork download
copy 
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5.     ios::sync_with_stdio(false);
  6.     cin.tie(nullptr);
  7.     cout.tie(nullptr);
  8.  
  9.     string s;
  10.     getline(cin,s);
  11.     deque<char>dq;
  12.  
  13.     for (int i = 0; i < s.size(); ++i){
  14.         if(i != 0&& s[i] == ' ' && s[i - 1] != ' ' && s[i - 1] != ',' && s[i - 1] != '.' && s[i - 1] != '!' && s[i - 1] != '?'){
  15.             dq.push_back(' ');
  16.         }
  17.         else if(s[i] >= 'a' && s[i] <= 'z'){
  18.             dq.push_back(s[i]);
  19.         }
  20.         else if(s[i] == ',' || s[i] == '.' || s[i] == '!' || s[i] == '?') {
  21.             if (!dq.empty() && dq.back()==' ') {
  22.                 dq.pop_back();
  23.             }
  24.             dq.push_back(s[i]);
  25.             if (i + 1 < s.size() && s[i + 1] != ' ') {
  26.                 dq.push_back(' ');
  27.             }
  28.         }
  29.     }
  30.  
  31.     for (char c : dq) {
  32.         cout << c;
  33.     }
  34.  
  35.     return 0;
  36. }
  37.  
Success #stdin #stdout 0.01s 5292KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
https://ideone.com/CuH1e8
language:
C++14 (gcc 8.3)
created:
9 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!