copypchar (copy of a string pointer of char)

#include<cstring>
#include<cstdlib>
#include<iostream>
#include<locale>

char* copypchar( char* data) {
    char *buffer; long size;
    size = strlen( data);
    if( ( buffer = (char *) malloc( ( size + 1) * sizeof( char)) ) == NULL) return NULL;
    memcpy( buffer, data, size+1);
    return buffer;
}

int main() {
    char buffer[201], *nome;
    setlocale( LC_ALL, "");     // equal caracters in prompt
    std::cout << "Nome: ";
    std::cin.getline( buffer, 200);
    nome = copypchar( buffer);
    std::cout << "Tamanho do nome: " << strlen( nome) << "\n";
    std::cout << "Nome: " << nome;
}