二级指针内存模型

Posted 2022-12-26 wanghao-boke

二级指针做输入，此时交换的是指针指向的内存

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

void printMyarray(char myArray[10][30],int num)

    int i;
    for(i = 0; i < num; i++)
    
        //printf("%s \n",myArray[i]);
        printf("%s \n",*(myArray+i));
    


void sortMyarray(char myArray[10][30],int num)

    int i = 0, j = 0;
    char tmp[30];

    for(i = 0; i < num; i++)
    
        for(j = i; j < num; j++)
        
            if(strcmp(myArray[i],myArray[j]) > 0)
            
                strcpy(tmp,myArray[i]);
                strcpy(myArray[i],myArray[j]);
                strcpy(myArray[j],tmp);
            
        
    


int main()

    int i = 0, j = 0;
    int num = 0;
//    char *myArray[] = "aaaaa","bbbbb","ccccl","1111111";
    char myArray[10][30] = "aaaaa","bbbbb","ccccl","1111111";
    num = sizeof(myArray)/sizeof(myArray[0]);

    printMyarray(myArray,num);

    sortMyarray(myArray,num);

    printf("after sort\n");

    printMyarray(myArray,num);

    return 0;