Max with pointer

#include <stdio.h>

int max(int *a,int *b)
{
    int mx;
    if(*a>*b)
        mx= *a;
    else
        mx= *b;
    return mx;
}

int main()
{
    int a,b;
    scanf("%d %d",&a,&b);
    printf("%d\n",max(&a,&b));

    return 0;
}