如何使用C語言中的for迴圈將陣列中的偶數和奇數分開？

陣列是一組以單一名稱儲存的相關資料項目。

例如int Student[30]; //student是一個陣列名，包含單一變數名的30個資料項集合

陣列的運算

• 搜尋 - 用於尋找特定元素是否存在

• #排序 - 它有助於排列數組中的元素按升序或降序排列。

• 遍歷 - 它按順序處理陣列中的每個元素。

• 插入 - 它有助於在陣列中插入元素。

• 刪除 - 它有助於刪除陣列中的元素。數組中的元素。

在陣列中找出偶數的邏輯如下-

for(i = 0; i < size; i ++){
   if(a[i] % 2 == 0){
      even[Ecount] = a[i];
      Ecount++;
   }
}

在陣列中尋找奇數的邏輯如下-

for(i = 0; i < size; i ++){
   if(a[i] % 2 != 0){
      odd[Ocount] = a[i];
      Ocount++;
   }
}

要顯示偶數，請呼叫下面提到的顯示函數-

printf("no: of elements comes under even are = %d </p><p>", Ecount);
printf("The elements that are present in an even array is: ");
void display(int a[], int size){
   int i;
   for(i = 0; i < size; i++){
      printf("%d \t ", a[i]);
   }
   printf("</p><p>");
}

要顯示奇數，請依照下列方式呼叫顯示函數−

printf("no: of elements comes under odd are = %d </p><p>", Ocount);
printf("The elements that are present in an odd array is : ");
void display(int a[], int size){
   int i;
   for(i = 0; i < size; i++){
      printf("%d \t ", a[i]);
   }
   printf("</p><p>");
}

程式

以下是使用for 迴圈分隔數組中偶數和奇數的C 程式-

 現場示範

#include<stdio.h>
void display(int a[], int size);
int main(){
   int size, i, a[10], even[20], odd[20];
   int Ecount = 0, Ocount = 0;
   printf("enter size of array :</p><p>");
   scanf("%d", &size);
   printf("enter array elements:</p><p>");
   for(i = 0; i < size; i++){
      scanf("%d", &a[i]);
   }
   for(i = 0; i < size; i ++){
      if(a[i] % 2 == 0){
         even[Ecount] = a[i];
         Ecount++;
      }
      else{
         odd[Ocount] = a[i];
         Ocount++;
      }
   }
   printf("no: of elements comes under even are = %d </p><p>", Ecount);
   printf("The elements that are present in an even array is: ");
   display(even, Ecount);
   printf("no: of elements comes under odd are = %d </p><p>", Ocount);
   printf("The elements that are present in an odd array is : ");
   display(odd, Ocount);
   return 0;
}
void display(int a[], int size){
   int i;
   for(i = 0; i < size; i++){
      printf("%d \t ", a[i]);
   }
   printf("</p><p>");
}

輸出

執行上述程序時，會產生以下結果-

enter size of array:
5
enter array elements:
23
45
67
12
34
no: of elements comes under even are = 2
The elements that are present in an even array is: 12 34
no: of elements comes under odd are = 3
The elements that are present in an odd array is : 23 45 67

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