单词统计程序

/*
功能：实现单词统计功能
*/

#include <stdio.h>
#include <string.h>

main()
{
char *t[20];			// 声明一个指针数组，长度为20
char (*t2)[20];			// 声明一个指针，该指针指向含20个元素的数组
printf("%d: %x, %x\n", sizeof(t), t, t+1);
printf("%d: %x, %x\n\n", sizeof(t2), t2, t2+1);
//return 0;

int i=0,j=0,nLen;
char *p,*q,str[]="My ti* me is! limi#ted.",words[100][20];
memset(words,'\0',sizeof(words));
p=str;
while (*p)
{
//if (*p==' ' || *p=='!' || *p==',' || *p=='.' || *p=='?')
if(!(isalpha(*p) || isdigit(*p)))		// 不是字母也不是数字,则为一个单词的结束
{
if(j > 0)							// 当前单词长度不为空
{
words[i++][j]='\0';
j=0;
}
}
else
{
if (j==0 && (*p >= 'a' && *p <= 'z'))
{
words[i][j++]=*p - 32;			// 将单词首字母变成大写
}
else
{
words[i][j++]=*p;
}
}
p++;
}

// 法一：用p
p=words[0];
while (strlen(p) > 0)					// 用p
{
printf("p: %x\t%s\n", p, p);
p += 20;
}
printf("\n");

// 法二：用p2
char (*p2)[20] = words;
while (strlen((const char*)p2) > 0)		// 用p2
{
printf("p2: %x\t%s\n", p2, p2);
p2++;
}
printf("\n");

//法三：用words
i = -1;
while (strlen(words[++i]) > 0)			// 用words
{
printf("wrods[%d]: %s\n", i, words[i]);
}
}

[zcm@t #109]$make
gcc -g   -c -o a.o a.c
gcc -g -o a a.o
[zcm@t #110]$./a
80: bfb5d554, bfb5d558
4: 8049a08, 8049a1c

p: bfb5cd6c	My
p: bfb5cd80	Ti
p: bfb5cd94	Me
p: bfb5cda8	Is
p: bfb5cdbc	Limi
p: bfb5cdd0	Ted

p2: bfb5cd6c	My
p2: bfb5cd80	Ti
p2: bfb5cd94	Me
p2: bfb5cda8	Is
p2: bfb5cdbc	Limi
p2: bfb5cdd0	Ted

wrods[0]: My
wrods[1]: Ti
wrods[2]: Me
wrods[3]: Is
wrods[4]: Limi
wrods[5]: Ted
[zcm@t #111]$