Semigrad interior-exterior

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//af semigradul interior/exterior ptr un vf i
#include <stdio.h>
#include <conio.h>

void main(void)
{
int a[50][50],interior[50],exterior[50],n,i,j;
FILE *f=fopen("c:intrare.txt","r");

fscanf(f,"%d",&n);
for(i=1;i<=n;i++)
  for(j=1;j<=n;j++)
     fscanf(f,"%d",&a[i][j]);
fclose(f);

for(i=1;i<=n;i++)
  {
    interior[i]=0;
    exterior[i]=0;
  }

for(i=1;i<=n;i++)
  for(j=1;j<=n;j++)
    {
      if (a[i][j]==1) exterior[i]++;
      if (a[j][i]==1) interior[i]++;
    }

for(i=1;i<=n;i++)
    {
      printf("nVarful %d:",i);
      printf("nSemigrad interior: %d",interior[i]);
      printf("nSemigrad exterior: %d n",exterior[i]);
    }
getch();
}