Code:
void show_person(struct Person* per)
{
    //printf("name: %c/n", &per->name);
    //printf("age: %d/n", &per->age);
    //printf("GPA: %f/n", &per->gpa);


    printf("name: %s\nage: %d\nGPA: %f\n", per->name, per->age, per->gpa);
}