define和typedef的区别

define是单纯的字符替换，typedef是重新定义了新的类型

#include 
    
     #define CHAR1 char*typedef char* CHAR2;int main(){  char c = 'a';  CHAR1 pc1,pc2;//pc1是char指针，但pc2是char  pc1 = &c;  pc2 = c;  *pc1 = 'w';  printf("%c ", c);  CHAR2 pc3,pc4;//pc3，pc4都是char指针  pc3 = &c;  pc4 = &c;  *pc4 = 'e';  printf("%c ", c);}