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#include <stdio.h>
#include <iostream>
void main()
{
char str1[] = "";
char str2[] = "";
const char str3[] = "abc";
const char str4[] = "abc";
const char* str5 = "abc";
const char* str6 = "abc";
char* str7="abc";
char* str8="abc";
std::cout << std::boolalpha << ( str1==str2 ) << std::endl; // Êä³öʲô£¿
std::cout << std::boolalpha << ( str3==str4 ) << std::endl; // Êä³öʲô£¿
std::cout << std::boolalpha << ( str5==str6 ) << std::endl; // Êä³öʲô£¿
std::cout << std::boolalpha << ( str7==str8 ) << std::endl; // Êä³öʲô£¿
int i;
 scanf("%d",&i);
}
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(1).
void GetMemory(char *p)
{
    p = (char *)malloc(100);
}
void Test(void)
{
    char *str = NULL;
    GetMemory(str);
    strcpy(str, "hello world");
    printf(str);
}
(2).
char *GetMemory(void)
{
    char p[] = "hello world";
    return p;
}
void Test(void)
{
    char *str = NULL;
    str = GetMemory();
    printf(str);
}
(3).
void GetMemory2(char **p, int num)
{
    *p = (char *)malloc(num);
}
void Test(void)
{
    char *str = NULL;
    GetMemory2(&str, 100);
    strcpy(str, "hello");
    printf(str);
}
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       (2)¿ÉÄÜÊÇÂÒÂë¡£ÒòΪ"hello world"¹ýÁËÉúÃüÆÚ£¬²»ÔÚÄÚ´æÁË