Lang:G++
Edit12345678910111213141516171819202122232425262728293031#include<iostream>#include<cstdio>#include<cstring>#include<algorithm>#include<map>#include<cstdlib>using namespace std;int main(){char a[900];cin.getline(a, 801);for (int i = 0; i < strlen(a); i++){if (a[i] == '@'){int j = i + 1;while (((a[j] <= 'Z' &&a[j] >= 'A') || (a[j] <= 'z'&&a[j] >= 'a')) && j < strlen(a)){j++;}if(j>i+1){for (int k = i + 1; k < j; k++){cout << a[k];}cout << " ";}}