函数返回指针类型（strchr函数）

#include<stdio.h>
#include<string.h> char *mystrchr(char *s,char c)
{while(*s){if(*s == c){return s;}s++;}return NULL;
}int main()
{char str[100] = "hello world";//char* s = strchr(str,'a');char *s = mystrchr(str,'e');//返回ello world字符串 printf("s = %s\n",s);return 0;
}