#include <stdio.h>

int Wif(int age1, int age2, int (*cmp)(int n1, int n2))
{
    return cmp(age1, age2);
}

int Of(int age1, int age2)
{
    if(age1>age2)
        return age1;
    else if(age1<age2)
        return age2;
    else
        return 0; 
}
int Yf(int age1, int age2)
{
    if(age1<age2)
        return age1;
    else if(age1>age2)
        return age2;
    else
        return 0; 
}

int main()
{
    int age1=20, age2=30;
    int first;

    printf("입장순서 1\n");
    first=Wif(age1, age2, Of);
    printf("%d세와 %d세중 %d세가 먼저 입장! \n\n", age1, age2, first);

    printf("입장순서 2\n");
    first=Wif(age1, age2, Yf);
    printf("%d세와 %d세중 %d세가 먼저 입장! \n\n", age1, age2, first);
    
    return 0;
}