11.2　光源を設定する

[Iwao@fedora C111]$ cd ../../C11/C112/
[Iwao@fedora C112]$ g++ c112.cpp -lglut -lGL -lGLU
c112.cpp:55:1: エラー: ‘Glfloat’ does not name a type; did you mean ‘GLfloat’?
   55 | Glfloat  green  [] = { 0., 1., 0., 1. } ;
      | ^~~~~~~
      | GLfloat
c112.cpp: 関数 ‘void init()’ 内:
c112.cpp:151:36: エラー: ‘green’ was not declared in this scope
  151 |  ::glLightfv(GL_LIGHT1,GL_DIFFUSE, green) ;
      |                                    ^~~~~
[Iwao@fedora C112]$ g++ c112.cpp -lglut -lGL -lGLU
[Iwao@fedora C112]$ ./a.out