C.1

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

int Soma (int matriz[][100], int B[100][100], int n)
{
      int i, j, MS[n][n];
    for (i=0; i<n; i++)
    {
    for (j=0; j<n; j++)
    {
        MS[i][j] = matriz[i][j]+B[i][j];
    }
    }
}
int Multiplicacao (int matriz[][100], int B[100][100], int n)
{
      int i, j, MM[100][100];
    for (i=0; i<n; i++)
    {
    for (j=0; j<n; j++)
    {
        MM[i][j] = matriz[i][j]*B[i][j] + matriz[i][j+1]*B[1+i][j] ;
    }
    }

}
void Inicializar (int m[][100], int n)
{
    int i, j;

     for (i=0; i<n; i++){
    for (j=0; j<n; j++)
    {
        printf ("[%d][%d] = ", i, j);
        scanf ("%d", &m[i][j]);
        }
        }
        }

    void Imprimir (int m[][100],int  n)
    { int i, j;
      for (i=0; i<n; i++){
    for (j=0; j<n; j++)
    { printf("\n[%d][%d] = %d",i, j, m[i][j]);}}}

main ()
{ int n, matriz[100][100], op, x[100][100], y[100][100], B[100][100];
    do
    {
    printf ("Digite o valor de N:");
    scanf ("%d", &n);
    } while(n<=2 || n>100);
    Inicializar(matriz, n);
    Inicializar(B, n);
    Imprimir (matriz, n);
    printf ("\n 1 - SOMA \n 2 - MULTIPLICAR \n 3- SAIR");
    scanf ("%d", &op);
switch(op)
case 1:
    x[n][n]= Soma(matriz, B, n);
    Imprimir(x, n);
    break;
    case 2:
    y[n][n] = Multiplicacao(matriz, B, n);
    Imprimir (y, n);
    break;
    case 3:
        return 0;
        break;

getch ();
return 0;}