nem_oo.cpp

#include <iostream>
#include <cstring>
#include "nem_oo.h"

namespace sajat{

int atoi(const char *p, int base)
{
    int atvaltott,n,i;
    for(i=strlen(p)-1,n=1,atvaltott=0;i>=0;i--,n*=base)
    {
        if((p[i]<'0') || (p[i]>'0'+base-1))
            throw "Hibás karakter";
        atvaltott+=(p[i]-'0')*n;

    }
    return atvaltott;

}

char *strcat(const char *p1, const char *p2)
{
        int i, j;

        for (i = 0; p1[i] != '\0'; ++i)
                ;
        for (j = 0; p2[j] != '\0'; ++j)
                ++i;
        char *uj = new char[i + 1];
        for (i = 0, j = 0; p1[i] != '\0'; ++i, ++j)
                uj[j] = p1[i];
        for (i = 0; p2[i] != '\0'; ++i, ++j)
                uj[j] = p2[i];
        uj[j] = '\0';
        return uj;

}

void swap(int &r1, int &r2)
{
    int x=r1;
    r1=r2;
    r2=x;
}

char* unique(char *first, char *last)
{
    char *vege=last;
    for(unsigned int i=strlen(first)-1;i>=0;i--)
    {
        int j=i-1;
        if(first[i]==first[j])
        {
            for(unsigned int k=j;k<strlen(first);k++) first[k]=first[k+1];
            vege--;
        }

    }
    vege++;
    return vege;

}
}