目标是：在字符串数组中插入指定的字符串并有序输出
代码：#include <stdio.h>
#include <string.h>

void sort(char** beg, char** end)
{
    char** p, *t;
    for(; beg != end; ++beg) {
        for(p = end - 1; p != beg; --p)
            if(strcmp(*p, p[-1]) < 0) {
                t = *p;
                *p = p[-1];
                p[-1] = t;
            }
    }
}

char** binary_search(char** beg, char** end, char* val)
{
    char** mid;
    while(beg < end) {
        mid = beg + ((end - beg) >> 1);
        if(strcmp(*mid, val) == 0)
            return mid;
        else if(strcmp(*mid, val) < 0)
            beg = mid + 1;
        else
            end = mid;
    }
    return beg;
}

int main()
{
    char* a[5] = {"this", "is", "an", "example"};
    char b[32], **p, **q;
    sort(a, a + 4);
   
    for(p = a; p != a + 4; ++p)
        printf("%s\n", *p);
    gets(b);
    p = binary_search(a, a + 4, b);
    for(q = a + 4; q != p; --q)
        *q = q[-1];
    *p = b;
    for(p = a; p != a + 5; ++p)
        printf("%s\n", *p);
}
这段代码的排序部分看明白了 就是插入字符串那段看不明白他的插入思路，还请看明白的指教下；