pre-paid card system

#include"stdio.h"

#include"conio.h"

int main(void)

{

int n,pcn=12345;

printf("Enter your pre-paid card number : ");

scanf("%d",&n);

if(n==pcn)

{

printf("your balance is : 300 BDT\n\n");

}

else if(n!=pcn)

{

printf("Enter your pre-paid card number Again : ");

scanf("%d",&n);
if(n==pcn)
{
printf("your balance is : 300 BDT\n\n");

}

if(n!=pcn)

{
printf("Enter your pre-paid card number Again : ");

scanf("%d",&n);
if(n==pcn)
{
printf("your balance is : 300 BDT\n\n");

}

else
{
printf("\nyour card number is invalid!!!!\n\nYou can insert card number After 6 Hours\n\n");

}

}

}

return 0;

}