求大神们帮忙 啊！！！急急急急。。。。

[huhanfeng2010]

写程序实现从键盘输入一个英文句子（句子长度不超过1000，单词之间用空格隔开），统计其中各单词出现的次数（单词不区分大小写，即Word和WORD视为一个单词），并按从大到小的顺序输出单词和其出现的次数，当单词出现的次数相等时，按照字典顺序输出（输出时请以单词的小写形式输出）。我的程序在运行时出现了好多问题，好像是结构体数组做形参方面的错误，这方面弄得不很懂 啊，帮忙看下啊
#include<stdio.h>
#include<string.h>
struct WORD
{char wordname[10];
int wordcount;
};

int statistics (char * source,struct WORD words[]);
void sortWords(struct WORD words[],int len);
void printWords(struct WORD words[],int len);
main(void){struct WORD words[200];
char sentence[2000];int len;
char * source=sentence;
printf("Please enter a sentence:\n");
gets(sentence);
len=statistics (source,WORD words[]);
sortWords(WORD words[200],len);
printWords(words[200],len);
return 0;
}
int statistics (char * source,struct WORD words[]){
char temp[10];
int len=1,i=0;
while(*source!='\0'){
if((*source>='a'&&*source<='z')||(*source>='A'&&*source<='A')){
temp[i]=*source;
i++;
}
else{temp[i]='\0';
for(int j=0;j<200;j++){
if(strcmpi(words[j],temp[i])==0)
words[j].wordcount++;
else{
words[i]=temp[i];
len++;}
i=0;}
source++;
}
return len;
}
void sortWords(struct WORD words[],int len){
int i,k;
struct WORD t;
for(i=0;i<len-1;i++){
k=i;
for(j=i+1;j<len;j++){
if(words[j].wordname[0]<words[k].wordname[0])
k=j;
t=words[k];
words[k]=words[i];
words[i]=t;}}
}

void printWords(struct WORD words[],int len)
{
int i;
printf("The result is as follows:\n");
for(i=0;i<len;i++)
printf("%s%d\n",words[i].wordname,words[i].wordcount);
}

[無_1024]

#include<stdio.h>
#include<string.h>
#include <ctype.h>
struct WORD
{
	char wordname[10];
	int wordcount;
};

int statistics (char * source,struct WORD words[]);
void sortWords(struct WORD words[],int len);
void printWords(struct WORD words[],int len);

int main(void)
{
	struct WORD words[200];
	char sentence[2000];
	int len;
	char * source=sentence;
	printf("Please enter a sentence:\n");
	gets(sentence);
	len=statistics (source,words);
	sortWords(words,len);
	printWords(words,len);
	return 0;
}

int statistics (char * source,struct WORD words[])
{
	char temp[10];
	int len=0,i=0;
	while(*source!='\0')
	{
		if((*source>='a'&&*source<='z') || (*source>='A'&&*source<='Z') )//----
		{
			temp[i]=tolower(*source);//--
			i++;
		}
		else
		{
			temp[i]='\0';
			i = 0;
			for(int j=0;j <= len;j++)
			{
				if( len == 0 )
				{
					strcpy(words[0].wordname,temp);
					words[0].wordcount = 1;
					len++;
					break;
				}
				if( strcmp(words[j].wordname,temp)==0 )
				{
					words[j].wordcount++;
					break;
				}
				else
				{
					if( j == len )
					{
						strcpy(words[j].wordname,temp);
						words[j].wordcount = 1;
						len++;
						break;
					}
				}
			}
		}	
		source++;
	}
	return len;
}
void sortWords(struct WORD words[],int len)
{
	int i,j;
	struct WORD t;
	for(i=0;i<len-1;i++)
	{
		for(j=i+1;j<len;j++)
		{
			if( words[i].wordcount < words[j].wordcount )
			{
				t=words[i];
				words[i]=words[j];
				words[j]=t;
			}
			else if( words[i].wordcount == words[j].wordcount )
			{
				if( strcmp(words[i].wordname, words[j].wordname) > 0 )
				{
					t=words[i];
					words[i]=words[j];
					words[j]=t;
				}
			}
		}
	}
}

void printWords(struct WORD words[],int len)
{
	int i;
	printf("The result is as follows:\n");
	for(i=0;i<len;i++)
		printf("%s  %d\n",words[i].wordname,words[i].wordcount);
}

[-好名字-]

还有个小不足，如果什么也不输入，会显示 “1”。

[-好名字-]

还有个小错误，如果什么也不输入，就会显示“1”.

[huhanfeng2010]

太谢谢啦！！呵呵，貌似还有个小错误。*source!='\0'应该是*（source-1）!='\0'，不然最后一个单词统计不出来。