有关COBOL中READ语句的问题
在我的COBOL教材中,对READ Statement 中的AT END语句有句话“When the 'AT END' condition occurs during sequential processing , the READ statement execution is unsuccessful.The contents of the record areas are 'undefined'”。我不是很明白这句话所要表达的含义,请各位大侠指教。谢谢……~~~~~~~~~~~~