• Pointer is a variable that holds the address of data rather than the data itself.
• Address is a memory location.
• Pointers provide facility to play with memory locations.
• Other languages like BASIC, COBOL, FORTRAN etc. do not provide such facility.
• Pointer points to something that is stored somewhere in memory.
• We can use pointer to point any variables viz. integer, character, float, array string, structure, file etc.
• Pointers are used to point to different data and different data structures.
• Pointers can also be initialized as an expression that involves the address of previously defined data of appropriate type.
Related Links :
History Of C..
In the beginning was Charles Babbage and his Analytical Engine, a machine
he built in 1822 that could be programmed to carry out different computations.
Move forward more than 100 years, where the U.S. government in
1942 used concepts from Babbage’s engine to create the ENIAC, the first
modern computer.
Meanwhile, over at the AT&T Bell Labs, in 1972 Dennis Ritchie was working
with two languages: B (for Bell) and BCPL (Basic Combined Programming
Language). Inspired by Pascal, Mr. Ritchie developed the C programming
language.
My 1st Program...
#include
#include
void main ()
{
clrscr ();
printf ("\n\n\n\n");
printf ("\t\t\t*******Pankaj *******\n");
printf ("\t\t\t********************************\n");
printf ("\t\t\t\"Life is Good...\"\n");
printf ("\t\t\t********************************");
getch ();
}
Next Step...
#include
#include
void main ()
{
clrscr ();
printf ("\n\n\n\n\n\n\n\n");
printf ("\t\t\t --------------------------- \n\n");
printf ("\t\t\t | IGCT, Info Computers, INDIA | \n\n");
printf ("\t\t\t --------------------------- ");
getch ();
}
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