4.1　空のウィンドウを開く

[Iwao@fedora C41]$ ll
合計 4
-rw-rw-r--. 1 Iwao Iwao 210  9月  6 14:22 c41.cpp
[Iwao@fedora C41]$ g++ c41.cpp
c41.cpp: 関数 ‘int main(int, char**)’ 内:
c41.cpp:10:4: エラー: ‘::glutCreatewindow’ has not been declared; did you mean ‘glutCreateWindow’?
   10 |  ::glutCreatewindow(argv[0]) ;
      |    ^~~~~~~~~~~~~~~~
      |    glutCreateWindow
c41.cpp:12:4: エラー: ‘::glutMainLooop’ has not been declared; did you mean ‘glutMainLoop’?
   12 |  ::glutMainLooop() ;
      |    ^~~~~~~~~~~~~
      |    glutMainLoop
[Iwao@fedora C41]$ g++ c41.cpp -lglut
c41.cpp: 関数 ‘int main(int, char**)’ 内:
c41.cpp:10:4: エラー: ‘::glutCreatewindow’ has not been declared; did you mean ‘glutCreateWindow’?
   10 |  ::glutCreatewindow(argv[0]) ;
      |    ^~~~~~~~~~~~~~~~
      |    glutCreateWindow
c41.cpp:12:4: エラー: ‘::glutMainLooop’ has not been declared; did you mean ‘glutMainLoop’?
   12 |  ::glutMainLooop() ;
      |    ^~~~~~~~~~~~~
      |    glutMainLoop
[Iwao@fedora C41]$ g++ c41.cpp
/usr/bin/ld: /tmp/ccBNDejL.o: in function `main':
c41.cpp:(.text+0x1e): undefined reference to `glutInit'
/usr/bin/ld: c41.cpp:(.text+0x2d): undefined reference to `glutCreateWindow'
/usr/bin/ld: c41.cpp:(.text+0x37): undefined reference to `glutDisplayFunc'
/usr/bin/ld: c41.cpp:(.text+0x3c): undefined reference to `glutMainLoop'
collect2: エラー: ld はステータス 1 で終了しました
[Iwao@fedora C41]$ g++ c41.cpp -lglut
[Iwao@fedora C41]$ ./a.out