#include<iostream>
#include<cmath>
using namespace std;
int main()
{
    double w,h,tol;
    cin>>h>>w;
    tol = w / (h * h);
    //cout<<tol<<"\n";
    if(tol < 18.5)cout<<"low"<<"\n";
    else if(tol >= 18.5 && tol < 24)cout<<"normal"<<"\n";
    else if(tol > 24)cout<<"high"<<"\n";
    return 0; 
}

#include<stdio.h> int main() { float x, y; scanf_s("%f %f",&x,&y); float BMI; BMI = y / (x * x); if (BMI < 18.5) { printf("low"); } else if (BMI < 24 & BMI >= 18.5) { printf("average"); } else if (BMI >= 24) { printf("high"); }; return 0;

}

水题

#include <iostream>
using namespace std;
int main()
{
    double h,w;
    cin >> h >> w;
    double bmi = w/h/h;
    if(bmi >= 24)   cout << "high" << endl;
    else if(bmi >= 18.5) cout << "normal" << endl;
    else cout << "low" << endl;
    return 0;
}

#include <stdio.h>
#include <algorithm>
#include <math.h>
using namespace std;
double m,w;
int main() {
    scanf("%lf%lf",&m,&w);
    double ans=w/(m*m);
    if(ans<18.5)
        printf("low\n");
    else
        if(ans<24)
        printf("normal\n");
    else
    if(ans>=24)
        printf("high\n");
    return 0;
}