// setting a pointer to a struct in C
// and set value by pointer
#include <stdio.h>
#include <stdbool.h>
// a struct called airplane
typedef struct
{ int fuel; double speed; bool landing_gear_down;
} airplane;
int main()
{ // make a pointer airplane *Hummingbird; // *Hummingbird is now a pointer and it can be assigned to point at a struct of type airplane. // this creates a struct of type airplane and assigns it a name of cessna and initializes it airplane cessna = {50, 155, true}; Hummingbird = &cessna; // now assign the pointer to the struct address // you can now call data types / variables via the pointer (*Hummingbird).fuel; // this is a little messy Hummingbird->speed; // this is clean and understandable printf("\nthe cessna has %d liters of fuel", Hummingbird->fuel); // set the value by pointer Hummingbird->fuel = 15; printf("\nthe cessna has %d liters of fuel", Hummingbird->fuel); (*Hummingbird).landing_gear_down = false; // or	Hummingbird->landing_gear_down = false; if (Hummingbird->landing_gear_down == false) { printf("\nlanding gear is up"); } else { printf("\nlanding gear is down"); }
};

struct name { member1; member2; . .
};
int main()
{ struct name *ptr, Harry;
}