Assignment-3/general_functions.h

// License: AGPLv3 or later. https://www.gnu.org/licenses/licenses.html

#ifndef _GENERAL_FUNCTIONS_H_
#define _GENERAL_FUNCTIONS_H_

#include <string>
#include <vector>

bool is_natural_number(const char* c_str);

bool is_whole_number(const char* c_str);

void get_textfile_lines(
    std::string filename, std::vector<std::string> &file_lines);

int random_int(int minimum, int maximum);

float random_float(float minimum, float maximum);

int modulate(int number, int modulus);

void cerr_and_exit(
    int exit_code,
    std::string error_name,
    std::string file_name,
    std::string function_name,
    int line_number,
    std::string additional_message = "");

void cerr_only(
    std::string error_name,
    std::string file_name,
    std::string function_name,
    int line_number,
    std::string additional_message);

/* Its a good practice to prototype all functions including which are
 * defined in header file itself such as inline functions before defining
 * any function. This way, even if we use one function in another
 * function, we do not have to worry about function undefined error
 * possibilities.
 */

inline int absolute_number(int number);

inline int smaller_number(int a, int b);

inline int bigger_number(int a, int b);

inline int absolute_number(int number)
{
    if (number < 0)
        return -(number);
    else
        return number;
}

inline int smaller_number(int a, int b)
{
    if (a > b)
        return b;
    else
        return a;
}

inline int bigger_number(int a, int b)
{
    if (a < b)
        return b;
    else
        return a;
}

void string_to_vector(
    std::string &a_string,
    std::vector<std::string> &str_vector,
    char delimeter = ',');

void pick_random_string(
    std::string &str, const std::vector<std::string> &str_vector);

#endif