將一個數組中的值按逆序重新存放

#include <stdio.h>
int main()
{
    int i,a[100],number,mid,temp1,temp2;
    printf("How many numbers do you want to enter? \n");
    scanf("%d",&number);//確定數組長度
    
    printf("Please input array:\n");
    for(i=0;i<number;i++)
    scanf("%d",&a[i]);
    
    printf("your array is:\n");                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
    for(i=0;i<number;i++)
    printf("%5d",a[i]);
    printf("\n");
    
    if(number%2==1)//輸入奇數位序列
    {
        mid=(number-1)/2;
        for(i=0;i<=mid;i++)
        {
            temp1=a[mid-i];
            a[mid-i]=a[mid+i];
            a[mid+i]=temp1;
        }
        
     }
    
     else//輸入偶數位序列
     {
         for(i=0;i<=number/2-1;i++)
         {
             temp2=a[i];
             a[i]=a[number-(i+1)];
             a[number-(i+1)]=temp2;
          }
     }
     printf("逆序排序后的數組為:\n");
     for(i=0;i<number;i++)
     printf("%5d",a[i]);
    return 0;
}