#include <stdio.h>
#include <math.h>

double num_prompt(void);
void sq_cube(double num, double* sq_val, double* cube_val);
void print_sq_cube(double num, double sq_val, double cube_val);

int main()
{
  double num;
  double sq_val, cube_val;
    
  num = num_prompt();
  sq_cube(num, &sq_val, &cube_val);
  print_sq_cube(num, sq_val, cube_val);
    
  return (0);
}

/* function definition */ 
double num_prompt(void)
{
    char line[100];
    double num;
    
    printf("Enter number:\n");
    fgets(line, sizeof(line), stdin);
    sscanf(line, "%lf", &num);
    
    return num;
}

void sq_cube(double num, double* sq_val, double* cube_val)
{
    *sq_val = pow(num,2);
    *cube_val = pow(num,3);
}

void print_sq_cube(double num, double sq_val, double cube_val)
{
    printf("%g squared = %g\n%g cubed = %g\n", num, sq_val, num, cube_val);
}