/*Write a function int numNonZero(int A[][COL], int num_rows, int num_cols) that 
finds and returns the amount of non-zero elements of the array A. 
Write a program that performs the following:

    Declares TWO two-dimensional arrays of integers of size 4X4 each (4 rows and 4 columns)
    Fills EACH array with the random generated numbers between -3 and 3 using function we wrote in class.
    Prints EACH random array using function we wrote in class
    Calculates the number of non-zero elements in each array and prints results with an appropriate message.
    Finds array with the maximal amount of non-zero elements 

We will modify and solve it for 10 arrays
we will store counters in count array
*/


#include<stdio.h>
#include<stdlib.h>
#include<time.h>
#define ROW 4
#define COL 4
#define SIZE 10
void print_array(int A[][COL], int num_row, int num_col); 
void make_random_array2d(int A[][COL], int num_row, int num_col, int min, int max);
void print_array1D(int A[], int size);
int numNonZero(int A[][COL], int num_rows, int num_cols);
int main(){
	srand(time(NULL));
	int A[ROW][COL],i, max, max_index, count_array[SIZE];
	//processing array 1
	make_random_array2d(A,ROW, COL, -3,3);
	printf("array 1\n");
	print_array(A,ROW, COL);
	count_array[0]=numNonZero(A, ROW, COL);
	max=count_array[0];
	max_index=0;
	for(i=1;i<SIZE;i++){
		make_random_array2d(A,ROW, COL, -3,3);
        	printf("array %d\n",i+1);
		print_array(A,ROW, COL);
		count_array[i]=numNonZero(A, ROW, COL);
		if(max<count_array[i]){
			max=count_array[i];
			max_index=i;
		}
	}
	printf("counters are\n");
	print_array1D(count_array,SIZE);
	printf("max=%d, max_index=%d\n",max, max_index);
	return 0;
}
void print_array(int A[][COL], int num_row, int num_col){


    int i; /* row counter */
    int j; /* column counter */

    for (i = 0; i < num_row; i++){
        for (j = 0; j < num_col; j++){
            printf("%d ", A[i][j]); 
        }
        printf("\n"); 
    } 


} 


void make_random_array2d(int A[][COL], int num_row, int num_col, int min, int max){
	int i; /* row counter */
    	int j; /* column counter */

    	for (i = 0; i < num_row; i++){
        	for (j = 0; j < num_col; j++){
			A[i][j]=min+rand()%(max-min+1);
		}
	}

}
void print_array1D(int A[], int size){
	int i;
        for(i=0;i<size;i++){
		printf("%d ",A[i]);
	}
	printf("\n");
}
int numNonZero(int A[][COL], int num_rows, int num_cols){
	int i,j, count=0;
	for (i = 0; i < num_rows; i++){
                for (j = 0; j < num_cols; j++){
			if(A[i][j]!=0)
				count++;
		}
	}
	return count;
}