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单选题

格式化输入可从标准输入、指定文件及字符缓冲区读取格式化数据。其中（）函数是输出到指定文件。()

A
printf
B
f printf
C
s printf
D
sn printf

题目答案

B

答案解析

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举一反三

Fatal error: Uncaught Error: Call to a member function query() on null in F:\duqu8.com\SaxueFrame\common\funarticle.php:16 Stack trace: #0 F:\duqu8.com\SaxueFrame\common\funarticle.php(51): formatContent('<p>\xE4\xB8\x8B\xE9\x9D\xA2\xE5\xAF\xB9\xE4\xBA\x8E...', Object(blockquestionlist)) #1 F:\duqu8.com\SaxueFrame\blocks\block_questionlist.php(107): formatQuestion(Array, Object(blockquestionlist)) #2 F:\duqu8.com\SaxueFrame\lib\template\template.php(640): blockquestionlist->setcontent(true) #3 F:\duqu8.com\SaxueFrame\data\compiled\templates\wap\question.detail.html.php(354): saxue_get_eloop(Array) #4 F:\duqu8.com\SaxueFrame\lib\template\template.php(329): include('F:\\duqu8.com\\Sa...') #5 F:\duqu8.com\SaxueWap\detail.php(81): saxuetpl->fetch('F:/duqu8.com/Sa...') #6 {main} thrown in F:\duqu8.com\SaxueFrame\common\funarticle.php on line 16