大一的问题，希望可以得到答案的

Question

大一新生，全英文教学，因为我们不允许用if语句，所以有些不知道如何做

Answer 1

1

#include <stdio.h>

int main()
{
    int age;
    printf("Please enter your age: ");
    scanf("%d", &age);
    age < 18 ? printf("You are not eligible for voting as your age is %d\n", age)
             : printf("You are eligible for vote as your age is %d, which is more than or equal to 18\n", age);
    return 0;
}

2

#include <stdio.h>

int main()
{
    char c;
    printf("Please enter a character: ");
    scanf("%c", &c);
    int lowercase = c >= 'a' ? (c <= 'z' ? 1 : 0) : 0;
    int uppercase = c >= 'A' ? (c <= 'Z' ? 1 : 0) : 0;
    (lowercase || uppercase) ? printf("%c is an alphabet", c) : printf("%c is not an alphabet", c);
    return 0;
}

3

#include <stdio.h>

int main()
{
    double temperature;
    printf("Please enter a temperature in centigrade: ");
    scanf("%lf", &temperature);
    printf("Temperature in Fahrenheit is: %.2lf\n", temperature * 9.0 / 5.0 + 32.0);
    temperature <= 15.0 ? printf("I am feeling cold\n")
                        : (temperature <= 25.0 ? printf("I am feeling okay, the temperature is fine\n")
                                               : printf("I am feeling warm!\n"));
    return 0;
}