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

void Nhap(double *a , int hang, int cot )
{	
    for ( int i = 0 ; i < hang; i++)
	{
		for ( int j = 0 ; j < cot ; j++)
		{
			scanf ("%lf",(a + i*hang + j));
		}
	}
}

void Xuat(double *a , int hang, int cot )
{
	for ( int i = 0 ; i < hang; i++)
	{
		for ( int j = 0 ; j < cot ; j++)
		{
			printf ("%lf ",*(a + i*hang + j));
		}
		printf ("\n");
	}
}

void Tich2matran(double *a, double *b,double *c, int hang, int cot, int n)
{
	for ( int i = 0 ; i < hang ; i++)
	{
		for ( int j = 0; j < cot ; j++)
		{
			*(c + i*hang + j) = 0;
			for ( int k = 0; k < n; k++)
			{
				*(c + i*hang + j) += *(a + i*hang + k) * *(b + k*hang + j);
			}
		}
	}
}

int main()
{
	int hang,cot;
	printf ("Nhap vao hang va cot cua ma tran A:");
	scanf ("%d%d",&hang,&cot);
	int n;
	printf ("\nNhap vao cap cua ma tran vuong B:");
	scanf ("%d",&n);
	double *a,*b,*c;
	a = (double* )malloc(hang*cot*sizeof(double));
	b = (double* )malloc(n*n*sizeof(double));
	c = (double* )malloc(hang*cot*sizeof(double));
	printf("\nNhap ma tran A:\n");
	Nhap(a,hang,cot);
	printf("\nNhap ma tran B:\n");
	Nhap(b,n,n);
	printf ("\nXuat A:\n");
	Xuat(a,hang,cot);
	printf ("\nXuat B:\n");
	Xuat(b,n,n);
	Tich2matran(a,b,c,hang,cot,n);
	printf ("\nXuat C:\n");
	Xuat(c,hang,cot);
	free(a);
	free(b);
	free(c);
	getch();
	return 0;
	
}