#include <stdio.h>
// Question 3

/* I know that the program would be overall simpler if I printed the sums in the function as they are
 * calculated, but I have always been taught to avoid printing within functions, so I went with the
 * returning an array of the sums method. It has the benefit of being able to use the sums later in the program
 * if necessary
 */

// Function to calculate sum of each row of matrix
// Arguments are array width, height, the array, and the array of return values
void row_sums(int width, int height, int matrix[width][height], int return_array[]) {
	int row_sum;
	for(int i = 0; i < height; i++) {
		row_sum = 0;
		for(int j = 0; j < width; j++) {
			row_sum+=matrix[i][j];
		}
		return_array[i] = row_sum;
	}
}
// Function to calculate sum of each column of matrix
// Arguments are array width, height, the array, and the array of return values
void column_sums(int width, int height, int matrix[width][height], int return_array[]) {
	int column_sum;
	for(int i = 0; i < height; i++) {
		column_sum = 0;
		for(int j = 0; j < width; j++) {
			column_sum+=matrix[j][i];
		}
		return_array[i] = column_sum;
	}
}

int main() {
	int width, height;

	printf("Enter width then enter height:\n");
	scanf("%d", &width);
	scanf("%d", &height);

	int matrix[width][height]; // The 2D array that holds the matrix
	// Input values into the matrix
	for(int i = 0; i < width; i++) {
		for(int j = 0; j < height; j++) {
			printf("Enter matrix value %d,%d: ", i, j);
			scanf("%d", &matrix[i][j]);
		}
	}
	// Print the matrix
	for(int i = 0; i < width; i++) {
		for(int j = 0; j < height; j++) {
			printf("%d ", matrix[i][j]);
		}
		printf("\n");
	}

	// Find sums for each row and print them
	int row_sum_values[width]; // Holds the sums for each row
	row_sums(width, height, matrix, row_sum_values);
	printf("Row sum values are: ");
	for(int i = 0; i < width; i++) {
		printf("%d, ", row_sum_values[i]);
	}
	printf("\n");

	// Find sums for each column and print them
	int column_sum_values[height]; // Holds the sums for each column
	column_sums(width, height, matrix, column_sum_values);
	printf("Column sum values are: ");
	for(int i = 0; i < height; i++) {
		printf("%d, ", column_sum_values[i]);
	}
	printf("\n");

	return 0;
}