C：检查命令行参数是否为整数

检查命令行参数是否为整数的方法

import sys
def check_integer_argument(argument):
    if argument.isdigit():
        return int(argument)
    else:
        raise ValueError("Argument is not an integer.")
try:
    argument = sys.argv[1]
    integer_argument = check_integer_argument(argument)
    print("The argument is an integer:", integer_argument)
except IndexError:
    print("No command line argument provided.")
except ValueError as e:
    print("Invalid argument:", str(e))