AWESOME isintnumber()

gistfile1.c++

char ystring :: isintnumber()
{
    char c=true;
    int i=0;
    if ( (this->symbols[i]=='-') ||
                                            (this->symbols[i]=='0') ||
                                            (this->symbols[i]=='1') ||
                                            (this->symbols[i]=='2') ||
                                            (this->symbols[i]=='3') ||
                                            (this->symbols[i]=='4') ||
                                            (this->symbols[i]=='5') ||
                                            (this->symbols[i]=='6') ||
                                            (this->symbols[i]=='7') ||
                                            (this->symbols[i]=='8') ||
                                            (this->symbols[i]=='9'))
    for (i=1; i<this->length; i++) c=c && ( (this->symbols[i]=='0') ||
                                            (this->symbols[i]=='1') ||
                                            (this->symbols[i]=='2') ||
                                            (this->symbols[i]=='3') ||
                                            (this->symbols[i]=='4') ||
                                            (this->symbols[i]=='5') ||
                                            (this->symbols[i]=='6') ||
                                            (this->symbols[i]=='7') ||
                                            (this->symbols[i]=='8') ||
                                            (this->symbols[i]=='9'));
    else c=false;
    return c;
}

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