c++ check if char is number

To check if a char is a number in C++, you can use the isdigit() function from the <cctype> header. Here are the steps to do it:

1. Include the <cctype> header at the beginning of your code file:

cpp #include <cctype>

1. Declare a char variable that you want to check if it is a number:

cpp char myChar = '5';

1. Use the isdigit() function to check if the char is a number. The function returns a non-zero value if the character is a digit, and zero otherwise:

cpp if (isdigit(myChar)) { // The character is a number } else { // The character is not a number }

By following these steps, you can determine if a char is a number in C++.