C小程序—二级指针第三种内存模型

#include "stdio.h"
#include "string.h"
#include "stdlib.h"

int printAarray03(char **  pArray, int num)
{
int i = 0;


if (pArray == NULL)
{
return -1;
}


for (i=0; i<num; i++)
{
printf("%s \n", pArray[i]);
}


return 0;
}


int sortArray03(char **pArray, int num)
{
char *tmp = NULL;
int i = 0, j = 0;


if (pArray == NULL)
{
return -1;
}
for (i=0; i<num; i++)
{
for (j=i+1; j<num; j++)
{
if (strcmp(pArray[i], pArray[j]) > 0)
{
//交换的是数组元素 数组元素是指针
tmp = pArray[i];
pArray[i] = pArray[j];
pArray[j] = tmp;
}
}
}
}




void main()
{
int i = 0, j = 0;
char **pArray = NULL;
char *tmp = NULL;
//构造内存
pArray = (char **)malloc(100*sizeof(char *)); //int pArray[100];
pArray[0] = (char *)malloc(12*sizeof(char)); //char buf[12];
pArray[1] = (char *)malloc(200*sizeof(char)); //char buf[200];
pArray[2] = (char *)malloc(200*sizeof(char)); //char buf[200];
pArray[3] = (char *)malloc(200*sizeof(char)); //char buf[200];


strcpy(pArray[0], "cccccc");
strcpy(pArray[1], "aaaa");
strcpy(pArray[2], "bbbb");
strcpy(pArray[3], "11111");

printAarray03(pArray, 4);

sortArray03(pArray, 4);

printf("第三种内存排序之后\n");
printAarray03(pArray, 4);




//释放内存
for (i=0; i<4; i++)
{
if (pArray[i] != NULL)
{
free(pArray[i]);
}
}
if (pArray != NULL) 
{
free(pArray);
}


system("pause");
}