All Notes on BCA

#include<stdio.h>
#include<conio.h>
void main()
{
int f=0,i,j,m1[3][3];
clrscr();
 for(i=0;i<3;i++)
  {
  for(j=0;j<3;j++)
   {
   printf("Enter element :  ");
   scanf("%d",&m1[i][j]);
   }
 }
 for(i=0;i<3;i++)
  {
  for(j=0;j<3;j++)
   {
   if(i==j && m1[i][j])
    {
   }
   else
   if(m1[i][j]==0)
    {
   }
   else
   {
    f=1;
    }
   }
  }
  if(f==0)
  printf("\nUnit matrix");
 else
  printf("\nNot - unit matrix");

getch();
}

INPUT
Enter element : 1
Enter element : 0
Enter element : 0
Enter element : 0
Enter element : 1
Enter element : 0
Enter element : 0
Enter element : 0
Enter element : 1
OUTPUT

Unit Matrix