nem_oop.cpp

#include "nem_oo.h"


void strcpy(char *dest, const char *source)
{
	while((*dest++=*source++)!='\0');
}

unsigned int strlen(const char *str)
{
	unsigned int len=0;
	while(*(str+len++)!='\0');
	return len-1;
}

int sajat::atoi(const char *p, int base)
{
	const char *it;
	int ret = 0;

	// Iterate through the numbers
	for(it=p; *it!='\0' && *it!=' '; it++)
	{
		char val = *it - '0';
		if(val >= base) throw "Wrong number system!";

		ret = ret*base + val;
	}

	return ret;
}

char *sajat::strcat(const char *p1, const char *p2) {

	unsigned int len1 = strlen(p1), len2 = strlen(p2);
	char *ret = new char[len1+len2+1];

	strcpy(ret,p1);
	strcpy(ret+len1,p2);

	return ret;
}

void sajat::swap(int& r1, int& r2) {
	int temp = r1;
	r1 = r2;
	r2 = temp;
}

char *sajat::unique(char *first, char *last) {
	char *lu = first, *it = first;
	
	do {
		it++;
		if(*it==*lu) continue;
		*++lu = *it;
	} while(it!=last);

	return lu+1;
}