Reverse Array in C: Store Numbers Backward

To store a set of numbers in reverse order, you can achieve this by swapping the elements in the array. The specific steps are as follows:

1. Declare an integer array to store the numbers to be reversed.
2. Reverse the elements of an array by using a loop. Iterate through half of the array’s length, starting from both ends and swapping elements until reaching the middle position.
3. Create a temporary variable and determine the length of the integer array. Then, iterate through half of the array swapping elements from the beginning with elements from the end.
4. After the loop, the elements in the array are stored in reverse order.

Complete code example:

#include <stdio.h>

int main() {
    int array[] = {1, 2, 3, 4, 5};
    int length = sizeof(array) / sizeof(int);

    // 交换数组元素
    int temp;
    for (int i = 0; i < length / 2; i++) {
        temp = array[i];
        array[i] = array[length - i - 1];
        array[length - i - 1] = temp;
    }

    // 输出逆序后的数组
    for (int i = 0; i < length; i++) {
        printf("%d ", array[i]);
    }

    return 0;
}

The output is: 5 4 3 2 1.