http://topic.csdn.net/u/20111114/10/2e439bbf-04c5-4042-9905-ece0bf008b97.html
/*
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]);
}
}
编译运行：
[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]$