C中int数组的初始值 [英] initial value of int array in C

问题描述

当像这样在 C 中声明一个数组时:

When declaring an array in C like this:

int array[10];

整数的初始值是多少??我使用不同的编译器得到不同的结果，我想知道它是否与编译器或操作系统有关.

What is the initial value of the integers?? I'm getting different results with different compilers and I want to know if it has something to do with the compiler, or the OS.

推荐答案

如果数组是在函数中声明的，则该值是未定义的.int x[10]; 在函数中的意思是:在不做任何初始化的情况下取得10-int大小的内存区域的所有权.如果数组在函数中声明为全局数组或 static，则所有元素如果尚未初始化，则将其初始化为零.

If the array is declared in a function, then the value is undefined. int x[10]; in a function means: take the ownership of 10-int-size area of memory without doing any initialization. If the array is declared as a global one or as static in a function, then all elements are initialized to zero if they aren't initialized already.

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