#include<stdio.h>
main()
{
int a[3][3]={1,2,3,4,5,6,7,8,9};
int *p;
p=a[0];printf("\nres:%d\n",*p); //here p points to a[0][0]
p=a[1];printf("\nres:%d\n",*p); //here p points to a[1][1]
p=a[2];printf("\nres:%d\n",*p); //here p points to a[2][2]
p=a[12];printf("\nres:%d\n",*p); //here p points to garbage value
}
how to access or point a[0][1] and other elements using only a[i] representation,what should the value of i be ?
p=a[0];printf("\nres:%d\n",*p); //here p points to a[0][0]
Correct.
p=a[1];printf("\nres:%d\n",*p); //here p points to a[1][1]
Incorrect. p points to a[1][0].
p=a[2];printf("\nres:%d\n",*p); //here p points to a[2][2]
Incorrect. p points to a[2][0].
how to access or point
a[0][1]
p = a[0]; // p points to a[0][0]
++p; // Now p points to a[0][1]
You can also use:
p = &a[0][1];
p = a[i] + i;//point to a[i][i]
p = a[i]; //point to a[i][0]
That's how to get the element of array.
p=a[0] + 1;//p points to a[0][1]. alsop=a[1];//p points to a[1][0],p=a[2];//p points to a[2][0]