c语言修改代码的问题

例子

./pet 

然后这是我的代码 想问下在 //1 和 //2 的地方怎么修改printf：

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

#define MAX_NAME_LENGTH 50
#define MAX_TYPE_LENGTH 50

struct pet
{
    char name[MAX_NAME_LENGTH];
    char type[MAX_TYPE_LENGTH];
    int age;
    int weight;
};

void setup_pet(
    struct pet *my_pet,
    char *name,
    char *type,
    char *age,
    char *weight);
void print_pet(struct pet *my_pet);

int main(int argc, char *argv[])
{
    if (argc < 5)
    {
        printf("%s should receive four extra command line arguments.\n", argv[0]);
        return 1;
    }
    struct pet new_pet;
    setup_pet(&new_pet, argv[1], argv[2], argv[3], argv[4]);
    return 0;
}

void setup_pet(
    struct pet *my_pet,
    char *name,
    char *type,
    char *age,
    char *weight)
{
    // 1
    strcpy(my_pet->name, name);
    strcpy(my_pet->type, type);
    my_pet->age = atoi(age);
    my_pet->weight = atoi(weight);
    print_pet(my_pet);
}

void print_pet(struct pet *my_pet)
{
    // 2
    printf("%s is a %s who is %d years old and weighs %dkg\n", my_pet->name, my_pet->type, my_pet->age, my_pet->weight);
}