#include <stdio.h>
#include <math.h>
#define PI 3.14159
    double
        find_area(double redius);
    double
        find_circum(double redius);
void main()
{
    double redius;
    printf("Enter one number>\n");
    scanf("%lf",&redius);
    printf("%f%f\n",find_area(redius),find_circum(redius));
}
double
find_area(double r)
{
    return(2.0*PI*r);
}
double
find_circum(double r)
{
    return(PI*pow(r,2));
}

刚学C两个星期。。。很多东西不懂
想问怎么改上面的程序，讲输出的两个数值分开~

谢谢啊。。。我果然很笨~