נושא: עזרה בשאלה

   int product[3];   //product[0] - stores price,product[1] - quantity,product[3]-ID (not used)

   pay=1,2 ;
   printf("Please enter number of products (quantity): ");
   scanf("%d",&qtPdct);
   printf("to pay cach press 1,to pay by credit card press 2\n");
   printf("\n\n");

   for(j=0;j<qtPdct;j++){
      i=0;
      printf("Enter [%d] product price : ",j+1);
      scanf("%d",&product);
      printf("Enter [%d] product quantity : ",j+1);
      scanf("%d",&product[i+1]);
      printf("Enter [%d] product ID code : ",j+1);
      scanf("%d",&product[i+2]);
   if(ID <100 || ID >499) printf("sorry,there no product have this ID code.. \n");
      printf("Enter [%d] how do you want to pay : ",j+1);
   scanf("%d",&pay);
   if(pay<1||pay>2) printf("sorry,you cant pay like that..");

         //         & ;nbs p;    price      *   quantity
      sum = sum + ( (product) * (product[i+1]) );

      printf("\n");
   }

   printf("\n\nTotal income is : %d",sum);

}