C question from an interview -


in lines code fail (meaning: don't supposed do), , why?

int main(void) {  char student[64] = "some guy";  char* teacher;   /* line1 */ strcpy(teacher, student);  /* line2 */ teacher=student;  /* line3 */ strcpy(student, "alber einstein");  /* line4 */ student = teacher; }

line 1 causes undefined behaviour. line 4 won't compile. since seems homework question, , don't give whole thing away, quick read of comp.lang.c faq or c language specification explain why.


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