C struct example

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

typedef struct{
  char *name;
  int age;
} person;

void person_change_name(person *p, char *new_name){
  p->name = calloc(sizeof(char), strlen(new_name));
  strcpy(p->name, new_name);
}

void person_profile(person *p){
  printf("Name: %s\nAge: %i\n", p->name, p->age);
}

int main(){
  person p = {"John", 32};
  person_profile(&p);
  person_change_name(&p, "Bobby");
  person_profile(&p);

  return 0;
}