tabelare

#include <stdio.h>
#include <math.h>
#define LEN_MAX 30

void tab(double a, double b, int n, double (*pf)(double)) {
  int sz = b - a;
  double step = 1.0 * sz / n;
  for (double x = a; x <= b; x += step) {
    printf("f(%g)=%g ", x, (*pf)(x));
  }
  puts("");
}

int main() {
  //tab(0, 10, 100, sqrt);
  //tab(-10, 10, 20, cos);
  tab(-10, 10, 200, fabs);
  return 0;
}