Encryption

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

int main()
{
   int securityCode;
   int encrypted[5];

   printf("Please enter your 4 digit personnel number: \n");
   scanf("%d", &securityCode);

   sscanf(securityCode, "%d", encrypted);

   for (int j; j < 5; i++){
    encrypted[i] = i + 7 %10;
   }


   for (int i; i < 5; i++){
    encrypted[i] = i + 7 %10;
   }

   printf("Your securityCode is %d\n", encrypted);

   return(0);
}