Simple Array Search

#include <stdio.h>
#include <stdlib.h>
#include <time.h> //for the random functionality
#include <stdbool.h> // in order to use the boolean Flag

#define arraySize 100

int main()
{
    time_t t;
    int array[arraySize]={0},i,z;
    bool flag = false;

    /* Intializes random number generator */
   srand((unsigned) time(&t));

   /*Fill the array with random Numbers*/
   printf("The Current Generated Array is:\n\n");
   for(i=0; i<arraySize; i++){
        array[i] = rand()%arraySize+1;

        printf("[%d] ",array[i]); //For debugging reasons
        if(i%10==0 && i!=0) //Just to make things a bit clearer
            printf("\n");
   }

   //ask user to search for an integer inside the array
   printf("\n\nGive a number between 1-100 and find out whether it is included inside the array : ");
   do
   {
      scanf("%d", &z);
      if(z<1 || z>100)
        printf("\nPlease Re-Enter the Number, Try following the rules given above : ");

   }while(z<1 || z>100);

   for(i=0; i<arraySize; i++)
   {
       if(z==array[i])
        {
            printf("\nThe Given Number %d Was found inside the array at position #%d",z,i+1);
            flag = true;
            break;

        }
   }

   if (flag == false)
    printf("The number you Entered couldn't be found inside the array");
    return 0;
}