ZZZ

#include<stdio.h>
#define CH 30
#define P 4
void main()
{
	int i, j=0, arr[30][4], max = 0, avg = 0, sum = 0, h_max = 0, arr2[4], counter_failed = 0;

	for (int i = 0; i < CH; i++)
	{
		for ( j = 0; j < P; j++)
		{
			printf("Enter a grade:\n");
			scanf("%d", arr[j]);
			if (arr[i][j]>90)
				sum += arr[i][j];
			arr2[j]++;
			if (arr[i][j] <= 56)
				counter_failed++;
		}
		printf("Enter the ID of student \n");
		scanf("%d", arr[i][j]);

		avg = sum / P;
		printf("The hight average grade what big more 90 is :\n", avg);
		if (avg > max)
			max = avg;
		h_max = arr[i][j];

    }
	printf("The high average of student is :\n", h_max);

	for (i = 0; i < 4; i++)
		if ((int)arr[i] > 10)
		{
			printf("Number of student with average > 10\n", arr[i]);
		}
			printf("The student failed %d\n", counter_failed);
}