C++ isalpha Function - Learn about the C++ isalpha function, its syntax, usage, and examples to check if a character is an alphabetic letter.
The IntlChar::isalpha() function returns TRUE if the val is alphanumeric character. Example The following is an example − <?php var_dump(IntlChar::isalpha("7")); echo ""; var_dump(IntlChar::isalpha("M")); ?> Output The following is the output − bool(false) bool(true) Example ...
isalpha() / isdigit() / isalnum() / islower() / isupper()参数为字符型变量,分别用于判断字符是否为字母 / 数字(注意是字符型) / 字母或数字 / 小写字母 / 大写字母。如果是,返回非0;如果不是,返回0。 #include<bits/stdc++.h> using namespace std; int main(){ char ch = 'Z'; cout << "...