回调函数应用（冒泡排序 既排整型数组 也可排字符串 ）

#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
//交换函数 交换n1 n2指向的变量 按字节交换 交换size个字节的大小
void swap(char *n1, char *n2,int size)
{
int i = 0;
while(i < size)
{
char temp = *(n1 + i);
*(n1 + i) = *(n2 + i);
*(n2 + i) = temp;
i++;
}
}
//整数比较函数
int int_cmp(const void *elem1,const void *elem2)
{
return (*(int *)elem1 - *(int *)elem2);
}
//字符串比较函数
int str_cmp(const void *s1, const void *s2)
{
//return strcmp((char *)*(int *)s1, (char *)*(int *)s2);
return strcmp((char *)*(int *)s1, (char *)*(int *)s2);//由字符串指针数组的数组元素的地址s1找到s1元素中存放的地址内容
}
//回调函数实现冒泡排序 排整数也可排字符串 n为数组元素大小
void bubble(void *base, int n, int size,int(*cmp)(const void *elem1, const void *elem2 ))
{
int i = 0;
int j = 0;
for (i = 0;i < n - 1;i++)
{
for (j = 0;j < n - 1 - i; j++)
{
if (cmp((char *)base + j*size, (char *)base + (j + 1)*size) > 0)
{
swap((char *)base + j*size, (char *)base + (j + 1)*size, size);
}
}
}
}
int main()
{
int arr_int[]={10,9,8,7,6,5,4,3,2,1};
int i = 0;
char *S[] = {"rrrrrrrrrrrrr","aaaaaaaaaaa","bbbbbbbbbbb","hhhhhhhhh","eeeeeeeeeeee"};
bubble(arr_int,10,sizeof(int),int_cmp);
for(i = 0;i < sizeof(arr_int)/sizeof(arr_int[0]);i++)
{
printf("%d  ",arr_int[i]);
}
printf("\n");
bubble(S,sizeof(S)/sizeof(S[0]),sizeof(char *),str_cmp);
for(i = 0;i < sizeof(S)/sizeof(S[0]);i++)
printf("%s\n",S[i]);
printf("\n");
system("pause");
return 0;
}