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