SongList

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct Song{
	char title[50];
	struct Song *next;
}*head, *tail, *curr;

void push_back(char title[]){
	struct Song *temp = (struct Song*)malloc(sizeof(struct Song));
	strcpy(temp->title, title);
	temp->next = NULL;
	if(!head){
		head = tail = temp;
	}
	else{
		tail->next = temp;
		tail = temp;
	}
}

void pop_front(){
	if(!head) return;
	curr = head;
	head = head->next;
	free(curr);
}

void view(){
	if(!head){
		 printf("Oh no.. The queue is empty..\n"); return;	
	}
	int n = 0;
	curr = head;
	while(curr){
		printf("%2d) %s\n", ++n, curr->title);
		curr = curr->next;
	}
}

bool is_valid_music_number(int n){
	if (n < 1||n > 10){
		printf("ERROR: The music number must be between 1 and 10!\n");
		return false;
	}
	return true;
}

int main(){
	char song[][50] = {
		"IDGAF - Dua Lipa",
		"FRIENDS - Marshmello, Anne-Marie",
		"The Middle - Zedd, Maren Morris, Grey",
		"Best Part - H.E.R., Daniel Caesar",
		"All The Stars (with SZA) - Kendrick Lamar, LZA",
		"Wolves - Selena Gomez, Marshmello",
		"God's Plan - Drake",
		"Rewrite The Stars - Zac Efron, Zendaya",
		"Havana - Camila Cabello, Young Thug",
		"Perfect - Ed Sheeran"
	};
	int menu, music_num;

	do{
		system("cls");
		printf("SONG LIST\n");
		for (int i = 0; i < 10; i++){
			printf("%2d) %s\n", i+1, song[i]);
		}
		printf("\nNEXT IN QUEUE\n");
		view();
		printf("\nMAIN MENU\n");
		printf ("1. Add Music Into Queue\n"
				"2. Next Music\n"
				"3. Clear Queue\n"
				"4. Exit\n");
		do{
			printf("Input your choice: ");
			scanf("%d", &menu); getchar();
		}while(menu < 1||menu > 4);
		printf("\n");
		switch(menu){
			case 1:
				do{
					printf("What music number will be added into the queue [1..10] ? ");
					scanf("%d", &music_num); getchar();
				}while(!is_valid_music_number(music_num));
				push_back(song[music_num-1]);
				printf("The music \"%s\" is added to the queue!\n", song[music_num-1]);
				getchar();
				break;
			case 2:
				if(!head){
					printf("Put some music into the queue first!\n");
				}
				else{
					printf("Now Playing: %s\n", head->title);
					printf("Press ANY KEY to STOP playing the music!\n");
					pop_front();
				}
				getchar();
				break;
			case 3:
				if(!head){
					printf("Put some music into the queue first!\n");
				}
				else{
					while(head){
						pop_front();
					}
					printf("Your music queue has been cleared!\n");
				}
				getchar();
				break;
		}
	}while(menu != 4);
	return 0;
}