以下是使用C语言编写的对主函数数组a降序排列的代码:

#include <stdio.h>

void sort(int arr[], int n) {
    int i, j, temp;
    for (i = 0; i < n; i++) {
        for (j = i + 1; j < n; j++) {
            if (arr[i] < arr[j]) {
                temp = arr[i];
                arr[i] = arr[j];
                arr[j] = temp;
            }
        }
    }
}

int main() {
    int a[] = {5, 2, 8, 3, 1};
    int n = sizeof(a) / sizeof(a[0]);
    int i;
    
    printf("Before sorting: ");
    for (i = 0; i < n; i++) {
        printf("%d ", a[i]);
    }
    printf("\n");
    
    sort(a, n);
    
    printf("After sorting: ");
    for (i = 0; i < n; i++) {
        printf("%d ", a[i]);
    }
    printf("\n");
    
    return 0;
}

运行结果:

Before sorting: 5 2 8 3 1 
After sorting: 8 5 3 2 1 
``
你好用C语言编写对主函数数组a降序排列

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