C++ 代码
#include<bits/stdc++.h>
#include<stdio.h>
using namespace std;
int main(){
int n1;
double n;
scanf("%lf", &n);
if(n >= 0 && n <= 25) printf("Intervalo [0,25]");
else if (n <= 50 && n > 25) printf("Intervalo (25,50]");
else if (n <= 75 && n > 50) printf("Intervalo (50,75]");
else if (n <= 100 && n > 75) printf("Intervalo (75,100]");
else printf("Fora de intervalo");
return 0;
}