Find size of a function in C

Question

I am learning function pointers,I understand that we can point to functions using function pointers.Then I assume that they stay in memory.Do they stay in stack or heap?Can

Answer 1

#include

int main(){
    void demo();
    int demo2();
    void (*fun)();
    fun = demo;
    fun();
    printf("\n%lu", sizeof(demo));
    printf("\n%lu", sizeof(*fun));
    printf("\n%lu", sizeof(fun));
    printf("\n%lu", sizeof(demo2));
    return 0;
}

void demo(){
    printf("tired");    
}

int demo2(){
    printf("int type funciton\n");
    return 1;
}

hope you will get your answer, all function stored somewhere

Here the output of the code