C语言查找字符

#include <stdio.h>

char* StrChr(const char *str, char chr);

int main()
{
    char s[1024], x, *p;
    gets(s);
    x = getchar();
    p = StrChr(s, x);
    if (p)
    {
        printf("%d\n", p - s);
    }
    else
    {
        puts("None");
    }
    return 0;
    }

/* 你提交的代码将被嵌在这里 */

输入样例1
Tommy
m
输出样例1
2
输入样例2
Tommy
n
输出样例2
None

char* StrChr(const char *str, char chr)
{
	int k = 1;
	for(int i = 0; *str != chr && k == 1; i++)
	{
		*str++;
		if(*str == '\0')
		{
			k = 0;
		}
	}
	if(0 == k)
	{
		str = 0;
	}
	return str;
}