如何将垃圾值分配给c中的变量 [英] How garbage values are assigned to variables in c

问题描述

C代码:

int a;
printf("\n\t %d",a); // It'll print some garbage value;

那么如何将这些垃圾值分配给C语言幕后的未初始化变量?

So how does these garbage values are assigned to uninitialized variables behind the curtains in C?

这是否意味着C首先将内存分配给变量'a'，然后该内存位置处的值变成了'a'的值?还是其他?

Does it mean C first allocates memory to variable 'a' and then what ever there is at that memory location becomes value of 'a'? or something else?

推荐答案

这是否意味着C首先将内存分配给变量'a'，然后该内存位置处的值变成了'a'的值?

Does it mean C first allocates memory to variable 'a' and then what ever there is at that memory location becomes value of 'a'?

完全正确！

基本上，C不会做您不告诉您的任何事情.这既是优点，也是缺点.

Basically, C doesn't do anything you don't tell it to. That's both its strength and its weakness.

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