c pointer test

typedef char* str;

void typetest()
{
str a, b;
a = "abc";
b = "cde";
puts(a);
puts(b);
}

void pointertest()
{
char* a, b;

a = "abc";
b = "cde";
puts(a);
puts(b);
}

typetest will be ok, pointertest will crash!
[解决办法]
str a,b;
等价于
char *a,*b;
而不等价于
char *a,b;
--------------------
char *a,b;
等价于
char *a
char b;
而不等价于
char *a
char *b;