字符个数统计
字符个数统计
http://www.nowcoder.com/questionTerminal/eb94f6a5b2ba49c6ac72d40b5ce95f50
#include <stdio.h>
#include <string.h>
int main(void)
{
char str[1000] = { 0 };
int num[128] = { 0 };
int count = 0;
gets(str);
for (int i = 0; i < strlen(str); i++)
if(!num[str[i]])
num[str[i]] = ++count;
printf("%d", count);
return 0;
} 
