自定义函数void sort(chara[],int n)用冒泡排序算法将n个字符串按字典序从小到大排序，在main函数中，调用sort函数对五个字符串数组charcolor[5]={"red","blue","yellow","green","black"}进行排序，依次输出排好的字符串
用 strcmp进行比较,直接交换指针地址
#include <stdio.h>
#include <string.h>
void sort(char *a[],int n)
{
char *t;
for(int i=0;i<n-1;i++)
for(int j=0;j<n-i-1;j++)
{
if(strcmp(a[j],a[j+1]) > 0)
{
t = a[j];
a[j] = a[j+1];
a[j+1] = t;
}
}
}
int main()
{
char *color[5]={"red","blue","yellow","green","black"};
sort(color,5);
for(int i=0;i<5;i++)
printf("%s\n",color[i]);
}