7.7.txt

c primer 部分习题答案

#include <stdio.h>
#define M 0.15
#define N 0.2
#define L 0.25
int main(void)
{
	float salary,pour,time,tax;
	printf("please input worktime\n");
	scanf("%f",&time);
	if(time<=40)
		salary=10.00*time;
	else
		salary=15*time-200;
	if(salary<=300)
		tax=salary*M;
	if((salary>300)&&(salary<=450))
		tax=salary*N-15;
	if(salary>450)
		tax=salary*L-37.5;
	pour=salary-tax;
	printf("工资部额%f,税金=%f,净工资%f\n",salary,tax,pour);
	return 0;
}