Example of Callbacks in c

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I would like an example of using callback in c that allows logging callbacks to be called when an event occurs.

c callback

1 answer

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In C the "callback" are not equal to the javascript that are much more imploded, are simply functions that are passed in arguments of other functions using function pointers.
Take this example: 

#include<stdio.h> 

void funcaoA() 
{ 
    printf("Olá"); 
} 

void funcaoB(void (*func)()) 
{ 
    (*func) ();
    printf(" Mundo \n");
} 

int main() 
{ 
    void (*func)() = &funcaoA; 

    funcaoB(*func); 

   return 0; 
}

You can test the code above here.
You find cool material to read on the subject here and here.

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