小编かわい*_*いそu的帖子

目前正在阅读 K&R，刚刚偶然发现了 char 指针。rn这本书里没有提到定义char指针时的内存分配，也许后面会解释。但这没有意义，所以我正在寻求帮助:)

1

// No errors
char *name;
char *altname;
strcpy(altname,name);

2

// No errors, internals of *name have been successfully moved to *altname
char *name = "HI";
char *altname;
strcpy(altname, name);

3

// Segmentation fault, regardless of how I define *altname
char *name = "HI";
char *altname = "randomstring";
strcpy(altname, name);

4

// Segmentation fault, regardless of how I define *altname
char *name;
char *altname = "     ";
strcpy(altname, name);

5

// copies internals of *name only …