C语言训练-数字母 （Java代码）普通做法

参考代码:

import java.util.Scanner;

public class Main1130 {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

String str = sc.nextLine();

int x = 0;

for (int i = 0; i < str.length(); i++) {

char c = str.charAt(i);

if (c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z') {

x++;

}

}

System.out.println(x);

}

}