c - How to use For loop with char? -

• by using loop. want let user input amount of lemonade want order. program calculate tax, subtotal, , total. after should let them continue either entering 'y' or 'n'.

• when compile these codes. blanks. wrong codes?

so made changes. don't know how have stop program if enter 'n' if ask continue.

#define _crt_secure_no_warnings #include<stdio.h> #include<stdlib.h>  void main() {     int numcups;     float subtot, tot = 0, tax;     char more;      printf("enter number of cups:");     scanf("%d", &numcups);     subtot = numcups*1.29;     tax = subtot*0.0825;     tot = subtot + tax;      printf("subtotal:%0.2f\ntax:%0.2f\ntotal:%0.2f\n", subtot, tax, tot);     fflush(stdin);     printf("thank you.\nwould order more lemonade?\n");      (; scanf("%c", &more);)     {         printf("enter number of cups:");         scanf("%d", &numcups);          subtot = numcups*1.29;         tax = subtot*0.0825;         tot += subtot + tax;         fflush(stdin);         printf("subtotal:%0.2f\ntax:%0.2f\ntotal:%0.2f\n", subtot, tax, tot);         printf("thank you.\nwould order more lemonade?\n");     }     system("pause"); } 

try this:

 (; scanf("%c", &more)&&more=='y';) 

this change let continue when use y character.