As I revealed to you before the idea of exhibits is firmly identified with pointers. Clusters will work quicker by utilizing pointers instead of utilizing a subscript.
So it is constantly prescribed to access exhibits by utilizing pointers. In the last instructional exercise, I gave a short diagram on 2D exhibits in C. Today I will talk about the utilization of 2D exhibits with pointers. This is one of the most mind-boggling themes of C programming, so I might want to propose you to peruse this instructional exercise with full focus.
2D Arrays with Pointers
A 2D exhibit is only a mix of 1D clusters. To demonstrate my point I might want to show you a model.
#include<stdio.h>
int main( )
{
int s[4][2]={
{542,43},
{154,354},
{432,54},
{435,435}
};
int x;
for(x=0;x<=3;x++)
printf("n Address of %d th 1-D array = %u",x,s[x]);
return 0;
}Output
Address of 0 th 1-D array = 65510
Address of 1 th 1-D array = 65514
Address of 2 th 1-D array = 65518
Address of 3 th 1-D array = 65522 Clarification
In the first place, I have announced a 2D exhibit with 4 lines and 2 sections and furthermore introduced it. So we can say that this 2D cluster is a gathering of four 1D exhibits having 2 components each.
After that, I have pronounced the whole number variable x which will go about like a circle counter.
Presently I have begun the for a circle with one printf() work. Consider cautiously the contentions in printf() work. I have given two contentions which are x and s[x].
As should be obvious I am just getting to the 2D cluster with one measurement. So it will give the addresses of just 1D clusters. s[0] will show the location of the first component of the first 1D exhibit, s[1] will show the address of the first component of the second 1D cluster, etc.
Access 2D Array Using Pointer Notation
The most ideal approach to learn it is through a program.
#include<stdio.h>
int main()
{
int s[4][2]={
{ 542, 43 },
{ 154, 354 },
{ 432, 54 },
{ 435, 435 }
} ;
int x;
printf(" %dn",s[2][1]);
printf(" It will give you address of 1st element of 3rd 1D array - %u n",s[2]);
printf(" It will give you address of 2st element of 3rd 1D array - %u n",s[2]+1);
printf(" Value at that address %d n", *(s[2]+1));
printf(" Alternate way of accessing that address %d n",*(*(s+2)+1));
return 0;
}Output
54
It will give you address of 1st element of 3rd 1D array - 65518
It will give you address of 2st element of 3rd 1D array - 65520
Value at that address 54
Alternate way of accessing that address 54