/*
Copyright (c) 2019 The Khronos Group Inc.
Use of this source code is governed by an MIT-style license that can be
found in the LICENSE.txt file.
*/


#ifdef GL_ES
precision mediump float;
#endif
// testing for char constants in #if and #elif
// Also checking whether reserved words can be redefined.

#define t1 c
#define t2 d
#define asm a

 #if(t1==c)
  #define t3 3
 #elif(t1==d)
  #define t4 4
 #elif(t2==c)
  #define t5 5
 #endif

 #ifndef t1
   #define t7 7
 #elif (t2==d)
  #define t6 6
 #endif

 #if (t2=='d')
  #define half 5
 #else
  #define half 8
 #endif

 #ifdef t22
  #define x 5
 #endif

 void main(void)
  {
   int sum =0,a=9;

   sum = half + sum;
   sum = asm + a;

  }