1. How to start a new program in compiler Code Blocks
2. Difference between gets(),getch(),getche(),getchar()
3. Pointers
Pointers
Pointers are variables that contains the address of another variable.Pointers are declared as
<data type><*name of pointer> => int *ptr
Example 1:
#include <stdio.h>
#include <stdlib.h>
int main()
{
int a=15;
int *ptr=&a;
printf("pointer value=%d",*ptr);
}
#include <stdlib.h>
int main()
{
int a=15;
int *ptr=&a;
printf("pointer value=%d",*ptr);
}
Here we declare two variables one is a and other is ptr.Here variable ptr contains the address of variable a.When print *ptr it will go to the address of a and print the value in the address of a,ie 15.
