#include <stdio.h>
#include <math.h>
/* Compile: cc -g -ansi -pedantic -Wall -O2 -o function function.c -lm */
/* Run: ./function */

/* Prototyping: */
/* When compiling with -Wall flag, prototyping is mandatory if the functions are placed after main(). */
/* It is always good practice to prototype your functions. */
float square(double f);
float squareroot(double f);

int
main()
{
  float f1, f2;
  f1 = square(3);
  f2 = squareroot(10);
  printf("The square of 3 = %f\n", f1);
  printf("The square root of 10 = %f\n", f2);
  return 0;
}

float square(double f)
{
  return pow(f, 2);
}

float squareroot(double f)
{
  return sqrt(f);
}

/* Prototypes */
#include <math.h>
float square(double f);
float squareroot(double f);

float square(double f)
{
  return pow(f, 2);
}

float squareroot(double f)
{
  return sqrt(f);
}

#include <stdio.h>
#include "myfunctions.h"
/* Compile: cc -g -ansi -pedantic -Wall -O2 -o function function.c -lm */
/* Run: ./function */
int
main()
{
  float f1,f2;
  f1 = square(3);
  f2 = squareroot(10);
  printf("The square of 3 = %f\n", f1);
  printf("The square root of 10 = %f\n", f2);
  return 0;
}