當把char* to ="You are a student."換成：char a[]="You are a student.";char *to=a;沒問題。編譯，連接沒問題，但運行就出問題了。調(diào)試顯示："unhandled exception??in Test01025.exe:0xC000005:Access Violation."請問這是什么原因?#include<stdio.h>int main(){?void copy_string(char *from,char *to);?char *from="I am a teacher.";?char *to="You are a student.";//當把這一行換成：char a[]="You are a student.";char *to=a;沒有問題?printf("string a=%s\nstring b=%s\n",from,to);?printf("copy string a to string b:\n");?copy_string(from,to);?printf("\nstring a=%s\nstring b=%s\n",from,to);?return 0;}void copy_string(char *from,char *to){?while(*to=*from)?{to++;?from++;?}}