classes declared within another class are called inner or nested classes

you use function ptr when you want to call multiple functions using the ptr in a loop.
like have an array of funtion ptrs, loop through the array and execute the functions.

pseudo code is the code written when converting the algorithm/ flow chart to actual code.
So it is in between the compiled code and flow chart. It is something that is not compiled but can be on
a notepad.

Methods are for objects functions are regular routines

Test s for prime or not?


#include<stdio.h>
void main(void)
{
           int no,rem,cnt;
        Printf("enter No");
        scanf("%d",&no);
        cnt=2;
        while(cnt<=no)
       {

              rem=no % cnt;
              if (rem==0)
              {
              printf("No is not prime");
              exit(0);
              }
              cnt++;
        }
          printf("No is Prime");
}

main()
{
 int n,row=1,col=40,i=0,j,k=0,count=1;
 int a[10];
 clrscr();
 i=n-1;
 printf("            WELCOME TO THE PROGRAM SIR/MADAM

<BR>);
 printf("Pyramid of how many numbers?  ");
 scanf("%d",&n);
 for (j=0;j<n;j++)
 {
  printf("Enter no.:-  ");
  scanf("%d",&a[j]);
 }
 clrscr();
 for (row=n;row>=1;row--)
 {
  k=0;
  k=40-(4*(row-1));
  i=row-1;
  for (col=40;col>=k;col=(col-4))
  {
   gotoxy(col,row);
   printf("%d",a[i]);
   --i;
  }
 }

 for (count=n;count>=1;count--)
 {
  k=0;
  k=40+(4*(count-1));
  i=count-1;
  for (col=40;col<=k;col=(col+4))
  {
   gotoxy(col,count);
   printf("%d",a[i]);
   --i;
  }
 }
 getch();
}

There are 3 main uses for the static.
1. If you declare within a function:
It retains the value between function calls

2.If it is declared for a function name:
By default function is extern..so it will be visible from other files. if the function declaration is as static, it is invisible for the outer files

3.Static for global variables:
By default we can use the global variables from outside files If it is static global..that variable is limitied to with in the file

C compiler was written in C language,that is true.But that does not say in what language first C compiler was written.I think first C compiler might have used assembly language instructions.And after that further compilers might have used this(or other compilers that was built the same way) compiler to compile the other newly build compilers.

There are cases when you need to define a constant pointer to a variable/object; for instance, when taking a function address, or when you want to protect a pointer from unintended modifications such as assignment of new address, pointer arithmetic