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OhFengGO
2023-08-23 21:52:51 +08:00
parent 971a1d91d6
commit fc324f936b
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分段函数.cpp Normal file
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#include <iostream>
#include <cmath>
#include <cstdlib>
#include <cstdio>
#include <iomanip>
using namespace std;
int main(){
double a;
cin >>a;
if(0<=a && a<5){
cout <<fixed<<setprecision(3)<<(0-a)+2.5;
}
if(5<=a && a<10){
cout <<fixed<<setprecision(3)<<2-1.5*(a-3.0)*(a-3.0);
}
if(10<=a && a<20){
cout <<fixed<<setprecision(3)<<a/2.0-1.5;
}
return 0;
}