Error Prompt

[elliven96]

Okay, hello. I would like to ask if there is a problem with my codes that it gave me an error message that sounded like 'Fault: access violation at 0xXXXXX: read of address 0xXXXXXXX'.

I had no errors so far but when I tried running it this screen shows up.
I'm currently using Borland C++. Thanks in advance.

#include <iostream.h>
#include <conio.h>

int calcAverage(int[][3],double);
int findHighest(int[][3],int);

int main(){

	const int x = 3;
	int nombor[x][3] = {{1,2,3},{6,7,8},{11,12,13}};
   int average;

   average =  calcAverage(nombor,x);
   findHighest(nombor,x);

   cout << "The average of all the elements are : " << average << endl ;

	getch();

}

int calcAverage(int a[][3],double x){

	int sum = 0;
	int av;

   for(int i = 0; i < x ; a++){
   	for(int j = 0; j <=3 ; j++){
      	sum += a[i][j];
      }
   }

   av = sum / (x * 3);

   return av;

}

int findHighest(int a[][3],int x){

   int highest = a[0][0];

	for(int i = 0; i <= x ; a++){
   	highest = a[i][0];
   	for(int j = 0; j <=3 ; j++){
      	if (a[i][j] > highest){
         	highest = a[i][j];
         }
         cout << "Highest number in row " << i+1 << " is " << a[i][j] << endl ;
      }
   }

   return 0;

}

[cire]

The condition on line 28 should be j < 3 .
The condition on line 43 should be i < x .
The condition on line 45 should be j < 3 .

[tipaye]

lines 27-28:
lines 43-48:
Incrementing "a"?
Never changing "i"?

Also:
Why is "x" double in calcAverage?
You realise calcAverage returns an unlikely int?

[elliven96]

Thanks, some careless manner over there. It worked.

[AssignmentExpert]

you should check code again.