Inmultirea a doua matrici(DUBLU POINTER).

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

void readMatrix(int linii, int coloane, int **p) {
	int i, j;

	for (i = 0; i < linii; i++) {
		for (j = 0; j < coloane; j++) {
			printf("m[%d][%d] = ", i, j);
			scanf_s("%d", *(p + i) + j);
		}
	}
}


void displayMatrix(int linii, int coloane, int **p) {
	int i, j;

	for (i = 0; i < linii; i++) {
		for (j = 0; j < coloane; j++) {
			printf("%d ", *(*(p + i) + j));
		}
		printf("\n");
	}
}

int **alocare(int linii, int coloane) {
	int **pointer;
	if ((pointer = (int**)malloc(sizeof(int*)*linii)) == NULL) {
		printf("\nNu aveti suficenta memorie: ");
		_getch();
		exit(0);
	}
	for (int i = 0; i <= linii; i++) {
		if ((*(pointer + i) = (int*)malloc(sizeof(int)*coloane)) == NULL) {
			exit(0);
		}
	}
	return pointer;
}

void multiplicaton(int l1, int c2, int c1, int **p1, int **p2,int **p3) {
	int i, j, k;

	for(i = 0; i < l1; i++){
		for (j = 0; j < c2; j++) {
			*(*(p3 + i) +j) = 0;
			for (k = 0; k < c1; k++) {
				*(*(p3 + i) + j) = *(*(p3 + i) + j) + *(*(p1 + i) + k ) * *(*(p2 + k) + j);
			}
		}
	}

}

void main() {
	int l1, c1, **p1, l2, c2, **p2, **p3;

	printf("Introduceti numarul de linii pentru prima matrice: \n");
	scanf_s("%d", &l1);

	printf("Introduceti numarul de coloane pentru prima matrice: \n");
	scanf_s("%d", &c1);

	p1 = alocare(l1, c1);

	readMatrix(l1, c1, p1);

	printf("\n");

	displayMatrix(l1, c1, p1);

	printf("\nIntroduceti numarul de linii pentru a doua matrice: \n");
	scanf_s("%d", &l2);

	while (l2 != c1) {
		printf("Reintroduceti: ");
		scanf_s("%d", &l2);
	}

	printf("Introduceti numarul de coloane pentru a doua matrice: \n");
	scanf_s("%d", &c2);

	p2 = alocare(l2, c2);

	readMatrix(l2, c2, p2);

	printf("\n");

	displayMatrix(l2, c2, p2);

	printf("Matricea 1 * Matricea 2 = \n");

	p3 = alocare(l1, c2);

	multiplicaton(l1, c2, c1, p1, p2, p3);

	printf("\n");

	displayMatrix(l1,c2,p3);

	_getch();
}