字符指针和字符数组区别

#include <stdio.h>#include <string.h>void replacechar(char *buffer,char oldchar,char newchar);int main(){//char *buf="xiaohaichun";//errorchar buf[]="xiaohaichun";printf("%c",*buf);replacechar(buf,'h','l');printf("new:%s/n",buf);return 0;}void replacechar(char *buffer,char oldchar,char newchar)//buffer为字符数值{size_t ipos;size_t buflen = strlen(buffer);ipos = 0;while(ipos<buflen){if(*buffer == oldchar){*buffer = newchar;}buffer+=1;ipos++;}}

char ch[] =  "hello";

ch[2] = 'a';//字符数值内容可以修改

 

char *p = "hello";//p指向产量字符串，常量其内容不可以变

p[2] = 'a';//编译不会发现其错误，运行错误