程序代码：

#include <STDIO.H>

void temperatures(double n);

int main(void)
{
    double fah = 0.0;
    //char c;

    printf("enter a far temperature(press q to quit):");
    while (scanf("%f", &fah) )
    {
        temperatures(fah);
        printf("enter another far(press q to quit):");
    }
    printf("done!\n");
    return 0;
}
void temperatures(double n)
{
    const double k = 1.8;
    const double b = 32.0;
    const double mod = 273.16;
    double cel, kel;
    cel = k * n + b;
    kel = cel + mod;
    printf("temprature are %.2fF, %.2fC, %.2fK.\n", n, cel, kel);
}

double fah = 0.0; 改成 float fath=0;