程序中变量分布的区域总结 堆 栈 字符常量区 全局数据区 静态存储区

程序中变量分布的区域总结 堆 栈 字符常量区 全局数据区 静态存储区

#include "stdafx.h"
#include <stdio.h>
#include <memory>
//Var:variable变量 g_:global全局 staticRegion静态区 constantRegion常量区 
int   g_Var=6;// global   initialized; 6/g_Var  in constantRegion
char *g_pVar; // global uninitialized;  g_pVar  in constantRegion

int main(int argc, char* argv[])
{
	int   s_Var=5; //  s_Var in stack; 5 in constantRegion
	char *s_pVar;  // s_pVar in stack;
	char  s_arr[]="abcde";// abcde in constantRegion; s_arr   in stack 字符串变量数组 
	char *s_arrxx="xxxxx";// xxxxx in constantRegion; s_arrxx in stack 字符串常亮
	
	static int s_c=61;// 9/c in globalStaticRegion;
	g_pVar=(char*)malloc(10);// g_pVar in constantRegion; allot 10 byte in heap;
	s_pVar=(char*)malloc(20);// s_pVar in stack         ; allot 20 byte in heap;
	strcpy(g_pVar,"qwer");
	
	return 0;
}