类型定义和宏定义的区别

typedef char * STRING;
#define STR char*

char name[] = "*****";

STRING s1, s2;//等同于 char *s1; char *s2;

s1 = name;
s2 = name;

STR s3, s4;//等同于char* s3, s4;宏定义只是简单的替换

s3 = name;
s4 = name[0];