largest of three, ternary operator

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

int main()
{

    int a,b,c,r;

    a = 10;
    b = 5;
    c = -1;

    r = a>b?(a>c?a:c):(b>c?b:c);

    printf("%d\n",r);

    return 0;
}