In C program, all variables must be declared before(52), usually at the(53) of the function before any executable statements.

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问题 In C program, all variables must be declared before(52), usually at the(53) of the function before any executable statements.

选项 A、end
B、middle
C、beginning
D、last

答案C

解析 在一段C程序中,所有变量在使用前必须声明,通常在函数的开始处,可执行语句之前声明。
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