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#include <stdio.h>
double ave3 (double, double, double);
double subave3 (double *, double *, double *);
int main ()
{
double a, b, c, ave;
printf ("Please enter three values: \n");
scanf ("%lf%lf%lf", &a, &b, &c);
ave = ave3 (a, b, c); /* Function call */
printf ("Average:%.3f \n", ave);
printf ("Original data:%.3f %.3f %.3f \n", a, b, c);
subave3 (&a, &b, &c);
printf ("Data after average deduction:%.3f %.3f %.3f \n", a, b, c);
return 0;
}
/* A function that calculates the average. It also subtracts the average value from the data. */
double subave3 (double *x, double *y, double *z)
{
double ave = ave3(*x,*y,*z);
*x-= ave; /* Subtract the average from each data */
*y-= ave;
*z-= ave;
}
double ave3 (double x, double y, double z) {
double ave = (x + y + z) / 3.0;
return ave;
}
