# include <stdio.h> int main ( ) { double a,c,d,sum; printf("当月利润(>0):\n"); scanf("%lf",&a); if (a<=10 && a>0) { sum = a*0.1; printf("奖金:%.3lf\n",sum); } else if (a>10 && a<=20) { c = a - 10; d = c*0.075; sum = d + 10*0.1; printf("奖金:%.3lf\n",sum); } else if (a>20 && a<=40) { c = a - 20; d = c*0.05; sum = d + 10*0.1 + 10*0.075; printf("奖金:%.3lf\n",sum); } else if (a>40 && a<=60) { c = a - 40; d = c*0.03; sum = d + 10*0.1 + 10*0.075 + 20*0.05; printf("奖金:%.3lf\n",sum); } else if (a>60 && a<=100) { c = a - 60; d = c*0.015; sum = d + 10*0.1 + 10*0.075 + 20*0.05 + 20*0.03; printf("奖金:%.3lf\n",sum); } else if (a>100) { c = a - 100; d = c*0.01; sum = d + 10*0.1 + 10*0.075 + 20*0.05 + 20*0.03 + 40*0.015; printf("奖金:%.3lf\n",sum); } else if (a<=0) { printf("error!\n"); } return 0; }