(a-a*0.015)/b*c*(1-0.005)-a或(a-a*0.015)/b*c-(a-a*0.015)/b*c*0.005-a
#include "stdio.h"void main(){ int a; float b,c,jieguo; scanf("%d%f%f",a,b,c); jieguo=((a-0.015*a)/(b*c))-(a-a*0.015)/(b*c*0.005)-a; //"%"is not in thr C-language. printf("%f",jieguo); }