#include "Cstring.h"
bool isDigit(char c)
{
if(c>='0' && c<='9')
return true;
return false;
}
bool isLetter(char c)
{
if((c>='a' && c<='z') || (c>='A' && c<='Z'))
return true;
return false;
}
bool isSpace(char c) //maybe don't need
{
if(c==' ')
return true;
return false;
}
int charToInt(char c)
{
int num=0;
if(isDigit(c))
num=c-'0';
return num;
}
unsigned int strLen(const char *s)
{
int i;
for(i=0;*s!='\0';i++,s++);
return i;
}
void append(char* d, const char* s)
{
char* dWalk=d+strLen(d);
for(;*s!='\0';dWalk++,s++)
*dWalk=*s;
*dWalk='\0';
}
void append(char* d, const char* s, int len)
{
char* dWalk=d+strLen(d);
for(int i=0;*s!='\0' && i