简单写写

#include <cstdio>

int main()
{
    float num;
    scanf("%f", &num);

    if(num > 100)printf("Fora de intervalo");
    else if(num > 75)printf("Intervalo (75,100]");
    else if(num > 50)printf("Intervalo (50,75]");
    else if(num > 25)printf("Intervalo (25,50]");
    else if(num >= 0)printf("Intervalo [0,25]");
    else printf("Fora de intervalo");

    return 0;
}