char str[1000];
int i = 0;
n[i] = getchar();
while (n[i] != 'n') {
    i++;
    n[i] = getchar();
}

string s = str;

string s;
getline(cin,s);

string s(str, i);

i++;
str[i] = '';
string s(str);

#include <iostream>
#include <string>

int main(){
char buf[] = "Hello, World!";
std::string str;
str = buf;
std::cout << str << std::endl;
return 0;
}