【C语言提高30】二级指针强化训练[02]

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

//主调函数分配内存
char** spitString3(char*buf1, char c, int*count)
{
//strcpy(buf2[0], "aaaaa");
//strcpy(buf2[1], "bbbbbb");
char *p = NULL, *pTmp = NULL;
int tmpcount = 0;
char**myp;

//1 p和ptmp初始化
p = buf1;
pTmp = buf1;

//第一遍扫描求出count //多少个逗号
////////////////////////////////////////////////////////////
do
{
//2 检索符合条件的位置 p后移  形成差值 挖字符串
p = strchr(p, c);
if (p != NULL)
{
if (p - pTmp > 0)
{
strncpy(myp[tmpcount], pTmp, p - pTmp);
myp[tmpcount][p - pTmp] = '\0';  //把第一行数据变成 C风格字符串
tmpcount++;
//3重新 让p和ptmp达到下一次检索的条件
pTmp = p = p + 1;
}
}
else
{
break;
}
} while (*p != '\0');

*count = tmpcount;

//根据多少行 精确的分配内存
/////////////////////////////////////////////////////////

//1 p和ptmp初始化
p = buf1;
pTmp = buf1;

tmpcount = 0;
myp = (char**)malloc(tmpcount*sizeof(char*));
if (myp == NULL)
{
return NULL;
}

do
{
//2 检索符合条件的位置 p后移  形成差值 挖字符串
p = strchr(p, c);
if (p != NULL)
{
if (p - pTmp > 0)
{
int len = p - pTmp + 1;
myp[tmpcount] = (char*)malloc(len*sizeof(char));
if (myp[tmpcount==NULL])
{
return NULL;
}

strncpy(myp[tmpcount], pTmp, p - pTmp);
myp[tmpcount][p - pTmp] = '\0';  //把第一行数据变成 C风格字符串
tmpcount++;
//3重新 让p和ptmp达到下一次检索的条件
pTmp = p = p + 1;
}
}
else
{
break;
}
} while (*p != '\0');

*count = tmpcount;

return myp;
}

//主调函数分配内存
int spitString4(char*buf1, char c, char***myp3,int*count)
{
//strcpy(buf2[0], "aaaaa");
//strcpy(buf2[1], "bbbbbb");
char *p = NULL, *pTmp = NULL;
int tmpcount = 0;
char**myp;

//1 p和ptmp初始化
p = buf1;
pTmp = buf1;

//第一遍扫描求出count //多少个逗号
////////////////////////////////////////////////////////////
do
{
//2 检索符合条件的位置 p后移  形成差值 挖字符串
p = strchr(p, c);
if (p != NULL)
{
if (p - pTmp > 0)
{
strncpy(myp[tmpcount], pTmp, p - pTmp);
myp[tmpcount][p - pTmp] = '\0';  //把第一行数据变成 C风格字符串
tmpcount++;
//3重新 让p和ptmp达到下一次检索的条件
pTmp = p = p + 1;
}
}
else
{
break;
}
} while (*p != '\0');

*count = tmpcount;

//根据多少行 精确的分配内存
/////////////////////////////////////////////////////////

//1 p和ptmp初始化
p = buf1;
pTmp = buf1;

tmpcount = 0;
myp = (char**)malloc(tmpcount*sizeof(char*));
if (myp == NULL)
{
return -2;
}

do
{
//2 检索符合条件的位置 p后移  形成差值 挖字符串
p = strchr(p, c);
if (p != NULL)
{
if (p - pTmp > 0)
{
int len = p - pTmp + 1;
myp[tmpcount] = (char*)malloc(len*sizeof(char));
if (myp[tmpcount == NULL])
{
return -3;
}

strncpy(myp[tmpcount], pTmp, p - pTmp);
myp[tmpcount][p - pTmp] = '\0';  //把第一行数据变成 C风格字符串
tmpcount++;
//3重新 让p和ptmp达到下一次检索的条件
pTmp = p = p + 1;
}
}
else
{
break;
}
} while (*p != '\0');

*count = tmpcount;
*myp3 = myp;

return 0;
}

void main()
{
int ret = 0, i = 0;
char *p1 = "abcdef,acccd,eeee,aaaa,e3eeeee,sssss,";
char cTem = ',';
int nCount;

char **p = NULL;

/*
p = spitString3(p1, cTem, &nCount);

if (p== NULL)
{
printf("fucn spitString() err: %d \n", ret);
return;
}
*/

ret = spitString4(p1, cTem, &p, &nCount);
if (ret == NULL)
{

printf("fucn spitString() err: %d \n", ret);
return;
}

for (i = 0; i<nCount; i++)
{
printf("%s \n", p);
}

for (i = 0; i < nCount; i++)
{
free(p[i]);
}
free(p);

printf("hello...\n");
system("pause");
return;
}