Problem on struct variables in c

Question

#include<stdio.h>
struct student{
int rnumber;
int r2number;
int r3number;
};
int average=0;
main ( ){
struct student raja[10][10];
struct student *p1=&raja[10][10];
for(int i=0;i<10;i++)
{
for(int j=0;j<10;j++)
{
raja[i][j].rnumber=i+j;
raja[i][j].r2number=i*j;
raja[i][j].r3number=i-j;
}
}
printf("\n%d:%d:%d",raja[1][0].r2number,raja[1][0].rnumber,raja[1][0].r3number);
for(int h=0;h<10;h++)
{
for(int y=0;y<10;y++)
{
average=(raja[h][y].r2number+raja[h][y].rnumber+raja[h][y].r3number)/3;
raja[h][y].rnumber=average;
raja[h][y].r2number=average;
raja[h][y].r3number=average;

}
}
printf("\n%d:%d:%d:%d",raja[1][0].r2number,raja[1][0].rnumber,raja[1][0].r3number,average);

}

Output:
0:1:1
0:0:0:33

Why did the average did not assign to struct variables

Answer 1

Vennimalai raja
it did, but most likely you expected a different result because your implementation isn't the same as what you think.
raj[1][0].rnum = 1 + 0;
raj[1][0].r2num = 1 * 0;
raj[1][0].r3num = 1 - 0;

in next loop:
avg= (0 + 1 + 1) / 3; // ->0
then rnum, r2num, r3num = avg

finally you print them:
0:0:0
and 33 comes from last element member values
(9+9 + 9*9 + 9-9) / 3 = 33

also p1 is out of boundaries.

Answer 2

Thankyou