escape.cpp

#include <iostream>
#include <string>

using namespace std;

int main()
{
    string line;
    getline(cin, line);
    
    bool escape = false;
    
    string escaped = "";
    
    for (char c : line) {
        if (c == '\\' && !escape) {
            escape = true;
            continue;
        }
         
         if (escape && c == 'n') {
            escaped += '\n';
        } else if (escape && c == 't') {
            escaped += '\t';
        } else if (escape && c == '"') {
            escaped += '\"';
        } else if (escape && c == '\\') {
            escaped += '\\';
        } else {
            if (escape) {
               cout << "wrong escape!" << endl;
                exit (EXIT_FAILURE);
            }
            escaped += c;
        }
        
        escape = false;
    }
    
    if (escape) {
        cout << "wrong escape!" << endl;
       exit (EXIT_FAILURE);
    }
    
    cout << escaped << endl;
    

    return 0;
}