Ex1-Corrected

#include <iostream>
#include <cstring>

using namespace std;

char* stringCompress(const char *str)
{
    char *result = new char[1];
    result[0] = '\0';
    char numbuff[10]; // buffer for number (count)
    char buff[11];    // buffer for number + char
    char current;
    int cnt = 0;
    int i = 0;
    while(*(str + i))
    {
        char current = str[i];
        do
        {
            i++;
            cnt++;
        }
        while (str[i] == current);

        itoa(cnt, numbuff, 10);
        cnt = 0;
        sprintf(buff, "%s%c", numbuff, current);
        char *b = result;
        result = new char[strlen(result) + strlen(buff) + 1];
        strcpy(result, b);
        delete[] b;
        strcat(result, buff);
    }
    return result;
}

int main()
{
    char* text1 = stringCompress("AAABBCCCC");
    cout << text1 << endl;
    char* text2 = stringCompress("WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWBWWWWWWWWWWWWW");
    cout << text2 << endl;
    return 0;
}