mystrlen

#include <stdio.h>

int mystrlen(const char *str)
{
	int n=0;
	const char *p = str;
	while(*p++ != '\0')
	{
		n++;
	}
	return n;
}


int main()
{
	char str1[100] = {'\0'};
	int  ret = 0;

	puts("please intput string ,the string length max = 99");	
	puts("eg: abcdef");	

	scanf("%s",str1);

	ret = mystrlen(str1);	
	printf("\n");
	printf("result: %s length: %d\n",str1,ret);	
	
}