函數指標當成參數傳遞

1. 參數宣告
   
   void PassPtr(int (*pt2Func)(int)); void PassPtr(int (*pt2Func)(int, char, char) __reentrant);

2. 程式範例
   
   int DoIt(float a, char b, char c) __reentrant { printf("DoIt\n"); return a+b+c; } int DoMore(float a, char b, char c) __reentrant { printf("DoMore\n"); return a-b+c; } void PassPtr(int (*pt2Func)(float, char, char) __reentrant) { int result = (*pt2Func)(12, 'a', 'b'); printf("%d\n", result); } void main() { printf("Executing 'Pass_A_Function_Pointer'\n"); PassPtr(&DoIt); PassPtr(&DoMore); }