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#include <iostream> | |
using namespace std; | |
struct Barang { | |
int nilai; | |
Barang *next; | |
} *depan = NULL, *belakang = NULL, *bantu = NULL; | |
int main() { | |
int input, tanya; | |
do { | |
bantu = depan; // bantu pindah ke depan | |
// perulangan bantu dari depan sampai belakang | |
while (bantu != NULL) { | |
cout << '[' << bantu->nilai << "] -> "; // cetak nilai bantu | |
bantu = bantu->next; // bantu pindah ke sebelahnya | |
} | |
cout << "Input: "; | |
cin >> input; | |
if (input > 0) { // jika input > 0 | |
bantu = new Barang; // bantu membuat barang baru | |
bantu->nilai = input; | |
bantu->next = NULL; | |
if (depan == NULL) { // kalau data kosong | |
depan = bantu; // 'depan' pindah ke 'bantu' | |
belakang = bantu; // 'belakang' pindah ke 'bantu' | |
} else { // kalau data sudah ada | |
cout << "depan (1) atau belakang (0)? "; | |
cin >> tanya; | |
if (tanya == 1) { // jika input depan | |
bantu->next = depan; // bantu disambung ke depan | |
depan = bantu; // depan pindah ke bantu | |
} else { // jika input belakang | |
belakang->next = bantu; // belakang disambung ke depan | |
belakang = bantu; // belakang pindah ke bantu | |
} | |
} | |
} | |
} while (input > 0); // jika input tadi nol, program berhenti | |
} |
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