Implementation of Hashing

#include<stdio.h>

#include<conio.h>

void main() {

 int a[10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

 int n, value;

 int temp, hash;

 clrscr();

 printf("\nEnter the value of n(table size):");

 scanf("%d", &n);

 do {

  printf("\nEnter the hash value");

  scanf("%d", &value);

  hash = value % n;

  if (a[hash] == 0) {

   a[hash] = value;

   printf("\na[%d]the value %d is stored", hash, value);

  } else {

   for (hash++; hash < n; hash++) {

    if (a[hash] == 0) {

     printf("Space is allocated give other value");

     a[hash] = value;

     printf("\n a[%d]the value %d is stored", hash, value);

     goto menu;

    }

   }

   for (hash = 0; hash < n; hash++) {

    if (a[hash] == 0) {

     printf("Space is allocated give other value");

     a[hash] = value;

     printf("\n a[%d]the value %d is stored", hash, value);

     goto menu;

    }

   }

   printf("\n\nERROR\n");

   printf("\nEnter '0' and press 'Enter key' twice to exit");

  }

  menu:

  printf("\n Do u want enter more");

  scanf("%d", &temp);

 }

 while (temp == 1);

 getch();

}