为什么我这代码不对

#include <cstdio>
#include <iostream>
using namespace std;
int main(){
    float m, h;
    scanf("%f %f", &m, &h);
    if (m / (h * h) < 18.5){
        printf("Underweight");
    } else if (m / (h * h) >= 24){
        printf("%6f\nOverweight", m / (h * h);
    } else {
        printf("Normal");
    }
    return 0;
}