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【单选题】
The standard input file for the system refers to_____.
A.
mouse
B.
keyboard
C.
monitor
D.
harddisk
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】If an error occurs when the fopen function is executed, the return value of the function is______.
A.
Address value
B.
NULL
C.
ERROR
D.
EOF
【单选题】In C, function that store integers in binary form are_____.
A.
fprintf()
B.
fread()
C.
fwrite()
D.
fputc()