- #include <cstdio> 
-   
- static int (*GoToDungeon)(); 
-   
- static int StepOnDragon() { 
-     printf("Ups, i've stepped on dragon's tail"); 
-     return -1; 
- } 
-   
- void Nevermind() { 
- 	GoToDungeon = StepOnDragon;   
- } 
-   
- int main() { 
-   GoToDungeon(); 
-   return 0; 
- } 
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