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  1. #include <iostream>
  2. #include <string>
  3.  
  4. void printer(void * userp)
  5. {
  6. 	std::string * string = reinterpret_cast<std::string*>(userp);
  7.     std::cout << *string << std::endl;
  8. }
  9.  
  10. int main() 
  11. {
  12.     //Cast the function to a one that takes a void pointer
  13.     void(*func)(void*) = &printer;
  14.     //Create a string and call the function with it
  15.     std::string string = "Hello World";
  16.     func(&string);
  17.     return 0;
  18. }
Success #stdin #stdout 0s 15232KB
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stdin
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Standard input is empty
stdout
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Hello World
https://ideone.com/P8fV3K
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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