这是pta上的一题

# include<stdio.h>
int main(void)
{
    int salary_h=0;
 unsigned int year=0;
 unsigned int  hours=0;
 float  salary=0;
 scanf("%u %u",&year,&hours);
 if(year<5)
 {
  salary_h=30;
 }
 else {salary_h=50;
 }
 if(hours<=40)
 {
  salary=salary_h*hours;
 }
 else
 {
  salary=1.5*salary_h*(hours-40) + salary_h*40;
 }
 printf("%.2f",salary);
 return 0;
}