If you read a number from a file and expect it to be positive, check that it is before further processing with that number.

如果从文件中读入一个数字并期望其为正数，那么，在使用其进行进一步处理前对其先验证一下。

youdao

If you read a number from a file and expect it to be positive, check that it is before further processing with that number.

如果从文件中读入一个数字并期望其为正数，那么，在使用其进行进一步处理前对其先验证一下。

youdao