數組的增、刪、改、查

#include<stdio.h> int length; int arr[6] = { 1, 2, 3, 4, 5, 6 }; length = sizeof(arr) / sizeof(arr[0]); //增 void Add() { for (int i = 0; i < length; i++) { if (arr[i] ==3) { for (int j =length-1; j>0;

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