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  1. #include <stdio.h>
  2.  
  3. typedef void FUNC(const char *str);
  4. typedef FUNC *FUNCPTR;
  5.  
  6. void func(const char *str)
  7. {
  8.     printf("func(%s)\n", str);
  9. }
  10.  
  11. void foo(FUNC *fn) { fn("foo"); }
  12. void bar(FUNCPTR fn) { fn("bar"); }
  13. void foobar(FUNC fn) { fn("foobar"); }  // OK
  14.  
  15. int main()
  16. {
  17.     FUNC *fn1 = func;
  18.     FUNCPTR fn2 = func;
  19. //  FUNC fn3 = func;    // エラー
  20.  
  21.     foo(func);
  22.     bar(func);
  23.     foobar(func);
  24.     fn1("fn1");
  25.     fn2("fn2");
  26. //  fn3("fn3");
  27.  
  28.     return 0;
  29. }
  30.  
Success #stdin #stdout 0s 1788KB
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stdin
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Standard input is empty
stdout
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func(foo)
func(bar)
func(foobar)
func(fn1)
func(fn2)
https://ideone.com/kwArU8
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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