请各位朋友们看看我这个问题出在哪里啊？

#include <stdio.h>

int main()

{

    float  taxicost(int Time,int distance);

    int a;

    printf("please enter Time and distance")

    scanf("%d,%d",&Time,&distance);

    a=taxicost(Time,distance);

    printf ("小明每天打车的总费用是%f元",2*a);

    return 0;

}

float  taxicost(int Time,int distance)

{

if (distance<=3)

{

    taxicost=14;

}

else if(5<=Time<23;distance>3)

{

    taxicost=(distance-3)*2.3+14;

}

else if(23<=Time<24||24<=Time<5;distance>3)

{

    taxicost=(distance-3)*2.3*1.2+14;

}

return taxicost;

}