utilities.h

#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <math.h>
double my_atof(char s[]);

int atoi(char s[]);

int lower(int c);

int rand(void);

int htoi(char s[]);

void squeese(char s[], char c[]);

void my_strcat( char s[], char t[]);

unsigned getbits( unsigned x, int p, int n);

int bitcount(unsigned x);

int binsearch_1(int x, int v[], int n);

int atoi2(char s[]);

void reverse(char s[]);

void itoa(int n, char s[]);

void itoa2(int n, char s[]);

void itob(int n, char s[], int b);

int trim(char s[]);