输入一个字符串统计字符串中每种字符的个数，大写字母小写字母，数字用c

统计字符串中字符的个数通常涉及到遍历字符串并分类计数。你可以创建一个简单的程序，例如在Python中，你可以这样做：

def count_chars(s):
    char_count = {
        'upper': 0, 'lower': 0, 'digit': 0, 'other': 0
    }

    for char in s:
        if char.isupper():
            char_count['upper'] += 1
        elif char.islower():
            char_count['lower'] += 1
        elif char.isdigit():
            char_count['digit'] += 1
        else:
            char_count['other'] += 1

    return char_count

input_string = "Hello123 World!"
char_info = count_chars(input_string)
for category, count in char_info.items():
    print(f"{category}: {count}")

#