51单片机怎么找最大值

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int arr[] = {1, 2, 3, 4, 5};
    int max = arr[0];

    for (int i = 0; i < sizeof(arr) / sizeof(arr[0]); i++) {
        if (arr[i] > max) {
            max = arr[i];
        }
    }

    printf("The maximum value is %d\n", max);

    return 0;
}

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int arr[] = {1, 2, 3, 4, 5};
    int max = max(arr[0], arr[1]);

    for (int i = 2; i < sizeof(arr) / sizeof(arr[0]); i++) {
        max = max(max, arr[i]);
    }

    printf("The maximum value is %d\n", max);

    return 0;
}

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int arr[] = {1, 2, 3, 4, 5};
    int len = sizeof(arr) / sizeof(arr[0]);

    qsort(arr, len, sizeof(int), cmpfunc);

    printf("The maximum value is %d\n", arr[len - 1]);

    return 0;

    int cmpfunc(const void *a, const void *b) {
        return *(int *)a - *(int *)b;
    }
}