Question

How to determines whether a character is a digit in C++

Answer 1

#include <iostream>

using namespace std;

int main()
{
	
	char ch = '9';
	if (isdigit(ch))
		cout << "yes" << endl;
	else
		cout << "no" << endl;

	ch = 'a';
	if (isdigit(ch))
		cout << "yes" << endl;
	else
		cout << "no" << endl;

	return 0;
}




/*
run:

yes
no

*/

 

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