c program to generate a menu driven application to ship stocks to customers checking their credits and stock availability

#include<stdio.h>
main()
{
int credit,qty,stock=10000,bal,s,d,m,y,q,n=1;

printf("\nWELCOME\n");
printf("\n checking system date, please enter the date\n");
printf("\nday:");
scanf("%d",&d);
printf("\nmonth:");
scanf("%d",&m);
printf("\nyear:");
scanf("%d",&y);
printf("\n Enter your credit\n");
scanf("%d",&credit);
while(n==1)
{
printf("\n Enter you order qty\n");
scanf("%d",&qty);
s=qty*2000;
bal=credit-s;
if(credit<s)
printf("\n sorry your credit is low, your requirement can't be supplied\n");
else
if(credit>=s&&qty<stock)
{
printf("\n Thank you, your requirement of %d items has been supplied\n",qty);
printf("\n the total cost is Rs. %d",s);
printf("\n your current credit is Rs%d\t",bal);
}
else
if(credit>=s&&qty>stock)
{
printf("\n your credit is ok but your requirement is more than the stock present\n");
q=qty-stock;
printf("\n Thank you, your requirement of %d items has been supplied\n",qty);
printf("\n your current credit is Rs%d\t",bal);
printf("\n the remaining qty: %d items will be shipped after 1 month,on %d.%d.%d\n",q,d,m+1,y);
printf("\n sorry for the inconvenience\n");
}
printf("\n enter 1 to order more items and 0 to exit\n");
scanf("%d",&n);
}
}