题解 | #网购#
网购
https://www.nowcoder.com/practice/5d7dfd405e5f4e4fbfdff6862c46b751
#include<stdio.h> int main() { double a,b,c,d; scanf("%lf %lf %lf %lf",&a,&b,&c,&d); if(b==c) { if(b==11){ if((a*0.7-d*50)<0) printf("0.00"); else printf("%.2lf",a*0.7-d*50); } if(b==12){ if((a*0.8-d*50)<0) printf("0.00"); else printf("%.2lf",a*0.8-d*50); } } else printf("%.2lf",a); return 0; }