35 lines
566 B
C
35 lines
566 B
C
/*
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* Callback table, used for abstracting behaviour. Also known as function
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* pointer table This is whats caleld a vtable in C++ terms.
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*
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* Commonly used as a form of polymorphism
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*/
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#include <stdio.h>
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static int global = 0;
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typedef struct {
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void (*put)(int);
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int (*get)();
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} Test;
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void my_put(int a) {
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global = a;
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}
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int my_get() {
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return global;
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}
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void executor(Test *t) {
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t->put(10);
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int got = t->get();
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printf("Got: %d\n", got);
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}
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int main() {
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Test t = {.get = my_get, .put = my_put};
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executor(&t);
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return 0;
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}
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