C++ 代码

#include<cstdio>

int main(){
    double n;
    scanf("%lf",&n);
    if(n>=0 &&n<=25) printf("Intervalo [0,25]");
    else if(n>25 &&n<=50) printf("Intervalo (25,50]");
    else if(n>50 &&n<=75) printf("Intervalo (50,75]");
    else if(n>75 &&n<=100) printf("Intervalo (75,100]");
    else printf("Fora de intervalo");
    return 0;
}