size_t l=(size_t)  insertLength;
    size_t m=(size_t)   strlen(src);
    int i=0;
    int j=0;
    char * result1=(char *) malloc ((l+m)*sizeof(char));
    char * result2;

    copyStringWithLength(result1,src,strlen(src)+1);

    for(j=insertPosition; j<insertPosition+insertLength; j++)
    {
        result1[j+insertLength]=result1[j];
        result1[j]=toBeInserted[i];
        i++;
    }
    result2=result1;

    return result2;
}