二级指针做输入的第一种模型

 

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
#include<string.h>

void printNum(char **array, int num)
{
    int i = 0;
    for (i = 0; i < num; i++)
    {
        printf("%s ", array[i]);
    }
}

void sortNum(char **array,int num)
{
    char *tmp = NULL;
    int i = 0, j = 0;
    for (i = 0; i < num; i++)
    {
        for (j = i; j < num; j++)
        {
            if (strcmp(array[i], array[j])>0)
            {
                tmp = array[i];    //注意：交换的数据的值，交换的是指针    //改变的是指针的指向
                array[i] = array[j];
                array[j] = tmp;
            }
        }
    }
}

int main()
{
    char *array[] = {"abbbb","aaaa","vvv","nnnn"};
    
    int num = 0;
    char *tmp;
    num = sizeof(array) / sizeof(array[0]);
    printf("排序前：");
    printNum(array,num);
    sortNum(array,num);
    printf("排序后：");
    printNum(array, num);

    system("pause");
    return 0;
}