Mine

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <conio.h>
#include <malloc.h>
#include <string.h>

int main(void)
{
	int e,meg,*array,e1,key,key1;

	printf("Parakalo doste mia epithimiti epilogi(1-9): \n 1. Dimiourgia Pinaka\n 2. Sosimo pinaka se arxeio\n 3. Diabasma pinaka apo arxeio\n 4. Emfanisi pinaka\n 5. BubbleSort\n 6. InsertionSort\n 7. QuickSort1\n 8. QuickSort2\n 9. QuickSort3\n 0. Exodos\n \nEpilogi:");
	while(key!=0){
		scanf("%d",&e);

		if(e==1){
			printf("Parakalo eisagete to megethos tou pinaka: ");
			scanf("%d",&meg);
			array=malloc(meg * sizeof(int));
			if(array==0) printf("Den yparxei mnimi gia tin dimiourgia neou pinaka \n");
			printf("Doste epithimito tropo arxikopoiisis: \n 1. Ataxinomitos\n 2. Sxedon taxinomimenos\n Epilogi:");
			while(key1!=0){
				scanf("%d",&e1);
				if(e1==1){
					int i;
					srand(time(0));
					for(i=0; i<meg; i++){
						array[i]=rand()%10;
						printf("%d\n",array[i]);
							}
					key1=0;
							}
				else if(e1==2){
					key1=0;
								}
				else printf("Akiri epilogi , doste mia epilogi apo 1-2:"); key1=1;
							}
			key=0;
					}
				
		else if(e==2){
			key=0;
						}
		else if(e==3){
			key=0;
						}
		else if(e==4){
			int i;
			for(i=0; i<meg; i++){
				printf("%d\n",array[i]);
									}
			key=0;
						}
		else if(e==5){
			key=0;
						}
		else if(e==6){
			key=0;
						}
		else if(e==7){
			key=0;
						}
		else if(e==8){
			key=0;
						}
		else if(e==9){
			key=0;
						}
		else if(e==0){
			key=0;
						}
		else printf("Akiri epilogi , doste mia epilogi apo 1-9:\n"); key=1;
		}
}