Двумерные массивы, ошибки при компиляции

#include "stdafx.h"
#include "Array.h"
#include <stdio.h>
#include <conio.h>
#define N 3
#define M 4
 
void main (void)
{int mas[N][M];
int r,c,a=0,b,i,j,num=-1;
int n,m;
Input_Matr(mas,n,m);
printf("If you will enter the unexistence number of row/coloumn you will see the proposition again.\n");
do
{printf("Do you want to delete a row? (Enter 1 if Yes, 0 if No)\n");
scanf("%d",a);
}
while(!(a==0) || !(a==1));
if (a==1)
    {do 
        {printf("Enter the number of row to delete:\n");
         scanf("%d",&r);}
    while ((r>N) && (r<1));
    r--;
    Row_Del(mas[N][M],N,M,r);}
getch();
}
 
 
 
void Row_Del (int* mas, int n, int m, int del)
{
int i,j;
for (i=del;i<n;i++)
     {for (j=0;j<m;j++)
           mas[i][j]=mas[i+1][j];}
}

Row_Del((int*)mas,N,M,r);
...
void Row_Del (int* mas, int n, int m, int del)
{
int i,j;
for (i=del;i<n-1;i++)
         {for (j=0;j<m;j++)
                   *(mas+i*j+j)=*(mas+(i+1)*j+j);}
}

scanf("%d",a);

scanf("%d",&a);

do
{printf("Do you want to delete a row? (Enter 1 if Yes, 0 if No)\n");
scanf("%d",&a);}
while(!(a==0) || !(a==1));

while(a!=0 && a!=1));

if (a==1)
    {do 
        {printf("Enter the number of row to delete:\n");
         scanf("%d",&r);}
    while ((r>N) && (r<1));
    r--;
    Row_Del((int*)mas,N,M,r);}

void Row_Del (int* mas, int n, int m, int del)
{
int i,j;
for (i=del;i<n-1;i++)
         {for (j=0;j<m;j++)
                   *(mas+i*m+j)=*(mas+(i+1)*m+j);}
}

len=len-sizeof(int)*m;

int row_size = N, column_size = M;
/*далее работаем только с этими переменными*/
Row_Del((int*)mas,row_size,column_size,r);
row_size--;

#include "stdafx.h"
#include "Array.h"
#include <stdio.h>
#include <conio.h>
#define N 6
#define M 6
void main (void)
{int mas[N][M];
int row_size = N, column_size = M;
int r,c=0,a=0,b=0,i,j,num=-1;
int n,m;
Input_Matr(mas,n,m);
Print_Matr(mas,n,m);
int len=sizeof(mas)/sizeof(int);
printf("If you will enter the unexistence number of row/coloumn you will see the proposition again.\n");
do
{printf("Do you want to delete a row? (Enter 1 if Yes, 0 if No)\n");
scanf("%d",&a);}
while(a!=0 && a!=1);
if (a==1)
    {do 
        {printf("Enter the number of row to delete:\n");
         scanf("%d",&r);}
    while ((r>N) && (r<1));
    r--;
    Row_Del((int*)mas,row_size,column_size,r);
    column_size-=1;
    Print_Matr(mas,row_size,column_size);}
getch();
}

void Input_Matr(int a[][K], int &n, int &m)
{
int i, j;
printf ("Enter size of matrix (n*m):\n");
scanf ("%d%d", &n, &m);
printf ("Enter the matrix:\n");
for (i = 0;i < n; i ++)
for (j = 0; j < m; j ++)
scanf("%d", &a[i][j]);
}

#include "stdafx.h"
#include "Array.h"
#include <stdio.h>
#include <conio.h>
#define N 6
#define M 6
void main (void)
{int mas[N][M];
int r,c=0,a=0,b=0,i,j,num=-1;
int n,m;
Input_Matr(mas,n,m);
Print_Matr(mas,n,m);
int len=sizeof(mas)/sizeof(int);
printf("If you will enter the unexistence number of row/coloumn you will see the proposition again.\n");
do
{printf("Do you want to delete a row? (Enter 1 if Yes, 0 if No)\n");
scanf("%d",&a);}
while(a!=0 && a!=1);
if (a==1)
    {do 
        {printf("Enter the number of row to delete:\n");
         scanf("%d",&r);}
    while ((r>N) || (r<1));                                //здесь не &&, а ||   !!! =)
    r--;
    Row_Del((int*)mas,N,M,r);
    n-=1;
    Print_Matr(mas,n,m);}
getch();
}

void Col_Del (int* mas, int n, int m, int del)
{
int i,j;
for (i=0;i<n;i++)
     {for (j=del;j<m;j++)
           *(mas+i*m+j)=*(mas+(i+1)*m+j);}
}

void Col_Del (int* mas, int n, int m, int del)
{
int i,j;
for (j=del;j<m-1;j++)
         {for (i=0;i<n;i++)
                   *(mas+i*m+j)=*(mas+i*m+j+1);}
}

if (a==1)
    {do 
        {printf("Enter the number of coloumn to delete:\n");
         scanf("%d",&c);}
    while ((c>M) || (c<1));
    c--;
    Col_Del((int*)mas,N,M,r);
    m-=1;
    Print_Matr(mas,n,m);}