solution number 10.

#include<stdio.h>
#include<conio.h>
#define s scanf
#define p printf

int main()
{
    int price, x;
 
    p("Choices:\n");
    p("1.] XL\n");
    p("2.] L\n");
 
 
    p("Enter T-Shirt Size: ");
    s("%d", &x);
 
 
 
    switch(x)
 
    {
    case 1:
     
         p("Enter Price: ");
         s("%d", &price);
     
         if(price>= 500)
       
         p("You Have Discount 100!");
     
         break;
     
    
     
     
    case 2:
              p("Enter Price: ");
              s("%d", &price);
          
              if(price >= 400)
          
              p("You have Discount 50!");
          
              break;
          
     
         default:
                  p("thank you!");
              
                  break;
                  }
         getch();
         return 0;
         }