字符串反转

#include<stdio.h>

void CharRev(char*);

int main()
{
	char szTest[] = "abcdefg";
	
	printf("before reverse:%s\n",szTest);
	
	CharRev(szTest);
	printf("after reverse:%s\n",szTest);

　　　　　return 0;
}

void CharRev(char *str)
{
	char *start, *end;
	char szTemp;

	if(str == NULL)
	{
		return;
	}
	
	start = str;
	end = str;

	while(*end != '\0')//find the end
	{
		end++;
	}
	end = end -1;

	while(start < end)
	{
		szTemp = *start;
		*start = *end;
		*end = szTemp;
		start++;
		end--;
	}
}