#include <iostream>
#include <string>
int main() {
std::string teks = "Contoh subproblem";
// Menggunakan operator subskrip untuk mendapatkan karakter tunggal
char karakter = teks[0];
std::cout << "Karakter pertama: " << karakter << std::endl;
// Menggunakan substr() untuk membuat substring
std::string sub = teks.substr(7, 10); // Mulai dari indeks 7, panjang 10
std::cout << "Substring: " << sub << std::endl;
return 0;
}
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