题目描述

用if条件句，不难。

样例

#include<iostream>
using namespace std;
int main()
{
    double x;
    cin>>x;
        if (x>=0&&x<=25)
            cout << "Intervalo [0,25]";
        else if (x>25&&x<=50)
            cout << "Intervalo (25,50]";
        else if (x>50&&x<= 75)
            cout << "Intervalo (50,75]";
        else if (x>75&&x<=100)
            cout << "Intervalo (75,100]";
        else
            cout << "Fora de intervalo";
        return 0;
}