Asri Code

#include <iostream>
#include <iomanip>
#include <cstdlib>
#include <cstring>

struct Student {
    char nim[11];
    char name[31];
    int id;
};

struct Node {
    struct Student *student;
    struct Node* next;
};

void initNode(struct Node *head,struct Student *student){
    head->student = student;
    head->next =NULL;
}


void tambahMahasiswa(struct Node *head, struct Student *student) {
    Node *newNode = new Node;
    newNode->student = student;

    newNode->next = NULL;
    Node *cur = head;
    while(cur) {
        if(cur->next == NULL) {
            cur->next = newNode;
            return;
        }
        cur = cur->next;
    }
}

bool Convert(const char* arr, int &arrInt) {
    errno = 0;
    char *strend;

    arrInt = strtol(arr, &strend, 10);
    if(errno == 0 && *strend == '\0')
        return true;

    return false;
}

int main() {
    int i = 0;
    int total_student = 0;

    struct Node *student_linked_list = new Node;

    std::cout << "Input Data Siswa : " << std::endl;

    for(i = 0; i < 10; i++) {
        std::cout << "Data Ke - " << i + 1 << std::endl;
        Student *student = new Student;

        while(true) {
            char name_temp[50];
            std::cout << "Masukan Nama : ";

            std::cin.getline(name_temp,50);

            if(strnlen(name_temp, 50) > 30) {
                std::cout << "Nama tidak boleh lebih dari 30 karakter" << std::endl;
                continue;
            }

            if(strnlen(name_temp, 50) < 3) {
                std::cout << "Nama tidak boleh kurang dari 3 karakter" << std::endl;
                continue;
            }

            strncpy(student->name, name_temp, 30);
            break;
        }

        while(true) {
            char nim_temp[20];
            std::cout << "Masukan NIM : ";

            std::cin.getline(nim_temp,20);

            if(strnlen(nim_temp, 20) != 10) {
                std::cout << "Panjang NIM harus 10 karakter" << std::endl;
                continue;
            }

            int nim_int;
            if(!Convert(nim_temp, nim_int)) {
                std::cout << "NIM harus angka" << std::endl;
                continue;
            }

            strncpy(student->nim, nim_temp, 10);
            break;
        }


        while(true) {
            char id_temp[10];
            std::cout << "Masukan Absensi : ";

            std::cin.getline(id_temp,10);

            int absensi_int;
            if(!Convert(id_temp, absensi_int)) {
                std::cout << "Absensi harus angka" << std::endl;
                continue;
            }

            student->id = absensi_int;
            break;
        }

        bool end_input = false;
        while(true) {
            char reinput[10];
            std::cout << "Lanjutkan ? (y/n) : ";

            std::cin.getline(reinput,10);

            if(strncmp(reinput, "y", 10) == 0) {
                break;
            }
            if(strncmp(reinput, "n", 10) == 0) {
                end_input = true;
                break;
            }
        }

        if(i == 0) {
            initNode(student_linked_list, student);
        } else {
            tambahMahasiswa(student_linked_list, student);
        }

        total_student = total_student + 1;
        std::cout << std::endl;

        if(end_input) {
            break;
        }
    }


    std::cout << std::endl << "Menampilkan Data 1 -" << (total_student) << std::endl;

    Node *list = student_linked_list;
    int loop = 1;
    while(list) {
        std::cout << loop << ". " << list->student->name << " (" << list->student->nim << "): " << list->student->id << std::endl;
        list = list->next;
        loop = loop + 1;
    }

    return 0;
}