No any result out for tis CP. Any one can help? TQ

Code:
#include <stdio.h>

main()
{
    int i,split,n_split;
    float km,n_km;


    printf("Miles\tKilometers\tMiles\tKilometers\n");

    for(i=1;i<=split;i++)
    {
        km=i*1.61;
        split=(1+20)/2;
        n_split=split+i;
        n_km=n_split*1.61;
        printf("%d\t%.2f\t\t%d\t%.2f\n",i,km,n_split,n_km);

    }

    return 0;
}