救救孩子吧hello.c: In function 'price': hello.c:4:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'float' float hour(c) ^~~~~ hello.c:10:5: error: expected declaration specifiers before 'else' else ^~~~ hello.c:14:5: error: expect

include <stdio.h>

double price(a)

int way(b)

float hour(c)

double sum()

    if(b>3)

    {

        sum==13+(b-3)*a;

    }

    else

    {

       sum==13;

    }

    if(5=<c<23)

    {

        a==0.2a;

    }

    sum=sum+1;

int main()

{

    a==2.3;

    b==12;

    9=<c=<18;

    printf("小明每天打车的总费用%f\n",sum;

    return 0;

}