C problem with passing pointer to struct to function - c

Question

I have a problem passing structure pointer to a function with fscanf().
Here's my struct:
typedef struct {
int health;
int y;
int z;
} save;
in main I have:
save save = { 0 }; //init with zeros
loadgame(&save);
health = save.health;
and my function loadgame() looks like that:
bool loadgame(save* save) {
FILE* fptr;
fptr = fopen("savegame.txt", "r");
if (fptr == NULL)
return 0;
fscanf(fptr, "health= %d", save->health);
return 1;
};
my savegame.txt file has line:
health= 5
and my function doesn't change save->health, after finish of this function my health equals zero.
I tried to do my function like that and it also has the same solution in function loadgame() I changed
fscanf(fptr, "health= %d", save-health);
to
fscanf(fptr, "health= %d", &(save-health));

Answer 1

fscanf(fptr, "health= %d", save->health); -> fscanf(fptr, "health= %d", &save->health);
Here you have working verison to play with https://godbolt.org/z/5CuZwR
As in my example always check the result of the scanf

Answer 2

Looks like your fscanf is passing the value of save->health instead of it's address.
You need to do
fscanf(fptr, "health= %d", &save->health);
Since -> has precedence over & this will give you the address of the health member.

Answer 3

fscanf needs a pointer so it knows where to save the value.
Other than that your code has a bunch of other small issues.
I have addressed those in the comments below:
#include <stdio.h>
#include <stdbool.h>
typedef struct {
int health;
int y;
int z;
}save_tp;
//using the same name for a typedef and a variable is a bad idea;
//typedef struct{...} foo; foo foo; prevents you from declaring other varibles of type foo
//as the foo variable overshadows the foo typedef name;
//better give types a distinct name
bool loadgame(save_tp* save){
FILE* fptr;
fptr = fopen("savegame.txt", "r");
if (fptr == NULL)
return false;
bool r = (1==fscanf(fptr, "health= %d", &save->health)); //needs an address + may fail
fclose(fptr); //need to close the file or you'd be leaking a file handle
return r;
} //shouldn't have a semicolon here
int main(void)
{
save_tp save={0};
if (!loadgame(&save)) perror("nok");
else printf("ok, health=%d\n", save.health);
}