Editing C syntax (section)

====Function Pointers====
A pointer to a function can be declared as follows:
<syntaxhighlight lang=C>
<return-type> (*<function-name>)(<parameter-list>);
</syntaxhighlight>

The following program shows use of a [[function pointer]] for selecting between addition and subtraction:
<syntaxhighlight lang=C>
#include <stdio.h>

int (*operation)(int x, int y);

int add(int x, int y)
{
    return x + y;
}

int subtract(int x, int y)
{
    return x - y;
}

int main(int argc, char* args[])
{
   int  foo = 1, bar = 1;

   operation = add;
   printf("%d + %d = %d\n", foo, bar, operation(foo, bar));
   operation = subtract;
   printf("%d - %d = %d\n", foo, bar, operation(foo, bar));
   return 0;
}
</syntaxhighlight>