pointers to structures (2)

[templarz]

hello, I'm new to c/c++ programming, I've read through a lot of beginners tutorials and understood quite a few things. I'm currently trying to write a program that modifies a struct by using a function that has pointers to the struct as arguments. Unfortunately it's not working. I think something's wrong with my function prototype. Can u please take a look and help me out. Thanks

#include <stdio.h>

void full (struct Alpha*); 

int main()
{
    struct Alpha {
        char id;
        int age;    
    };
    Alpha toni;
    full(&toni);
    
    printf("id=%c age=%d",toni.id,toni.age);
    
    return 0;
}
    
void full (struct Alpha *p){
    p->id='x';
    p->age=19;          
}

[SlyMaelstrom]

There is something wrong with your function prototype. It's declared with an arguement of a type that doesn't exist, yet. Declare your struct above your function prototype, not in main. ..and before you ask, your next problem is because you don't have the keyword struct preceding "Alpha toni"

[templarz]

thanks

[itsme86]

Also:

Alpha toni;

You can't do that in C without a typedef. You need to use:

struct Alpha toni;