变量名如何存储在C中？ [英] How is a variable name stored in C?

问题描述

我想问变量C如何存储在C中？

更清楚地考虑以下代码：

  int main（）{
 int a = 1，b; 
 b = a + 2; 
返回0； 
} 
  

例如，在这里存储器C中存储变量位置的名称。

例如，如果& a = 0x12A7 （假设）& b = 0x123B1 ，然后

I want to ask how C the variables are stored in C?

To be more clear consider the following code:

int main() {
    int a = 1, b;
    b = a + 2;
    return 0;
}

For example here in what memory C stores the names of variable places.

eg if &a=0x12A7(suppose) &b=0x123B1, then how and where does c stores the variable names like in which memory name a is stored?

解决方案

C doesn't store name of the variables. Its the compiler that stores the names of variables in compiler's symbol table.
This data structure is created and maintained by compiler.
An example of a symbol table for the snippet

// Declare an external function
extern double bar(double x);

// Define a public function
double foo(int count)
{
    double  sum = 0.0;

    // Sum all the values bar(1) to bar(count)
    for (int i = 1;  i <= count;  i++)
        sum += bar((double) i);
    return sum;
}  

may contain at least the following symbol:

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