●In C program,all variables must be (70) before use,usually at the beginning of the functi

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●In C program,all variables must be (70) before use,usually at the beginning of the function before any (71) statements.

(70) A.stated

B.writed

C.illustrated

D.declared

(71) A.operate

B.active

C.executable

D.processing

参考答案:

D,C【解析】译文: 在一段C程序中,所有变量在使用前必须声明,通常在函数的可执行语句之前声明。

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