c++ function for checking if a sting is a number
bool is_number(const std::string& s)
{
std::string::const_iterator it = s.begin();
while (it != s.end() && std::isdigit(*it)) ++it;
return !s.empty() && it == s.end();
}c++ function for checking if a sting is a number
bool is_number(const std::string& s)
{
std::string::const_iterator it = s.begin();
while (it != s.end() && std::isdigit(*it)) ++it;
return !s.empty() && it == s.end();
}string c++ if letter or number
char test='a';
cout<<isalpha(test);Copyright © 2021 Codeinu
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