A-A+
In C language (70)variables have to be defined
问题详情
In C language,(70)variables have to be defined outside of any function, this(71)actual storage for it.
A．internal
B．export
C．output
D．external请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：D
解析：译文：C语言中，外部变量必须在所有函数体之外定义，并为之分配实际内存空间。
