Antivirus console edition/newcpp.h
bool isCharNumber(char c) {
    //int a = 100;
    //a = c - '0';
    return isdigit(c);
}
//Returns true if given char is number
Returns true if given char is number
Returns true if given char is number
bool isCharNumber(char c) {
    return isdigit(c);
}
bool isCharNumber ( char c ) { return isdigit ( c ) ; }
Returns true if given char is number
Returns true if given char is number
//int a = 100; //a = c - '0';