C语言：strchr函数的实现

#define _CRT_SECURE_NO_WARNINGS//strchr
#include<assert.h>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>

char* my_strchr(char* str, int c)
{
 while (*str != c)
 {
  str++;
 }
 return str;
}
int main()
{
 char arr1[20] = "abcghjdhajcag";
 char c='c';
 
 printf("%s", my_strchr(arr1, c));
 system("pause");
 return 0;
}