Not able to pass test case

#1

In wave print question of araay
Here is my code:

#include
using namespace std;
int main() {
int m,n;
cin>>m>>n;
if(m>10||n>10)
{
return 0;
}
int arr[10][10];
for (int i = 1; i <= m; i++)
{
for (int j = 1; j <= n; j++)
{
cin >> arr[i][j];
}
}

for (int i = 1; i <= m; i++)
{
	if ((i % 2) == 1)
	{
		

	for(int j=1;j<=n;j++)
		{

			cout << arr[j][i] << ","<<" ";
	
		}
	}
	else if((i%2)==0)
	{

		for (int j = n; j >= 1; j--)
		{

			cout << arr[j][i] << ","<<" ";

		}
	}
	
}
cout << "END";
return 0;

}

#2

@1706157
hello satyam,
declare array as int arr[11][11];

#3

still not able to pass the testcase.

#4

@1706157
ok then pls save ur code on https://ide.codingblocks.com/ and share the link

#6

here is the link.

#7

@1706157

a) declare ur array as arr[m+1][n+1]
b) in line no 15, it should be n
c) in line no 21 and 31 ,it should be m

#8

Now , its working fine but I dont understand why are we taking an extra space and using arr[m+1][n+1] instead of arr[m][n]
Thanks for the help.

#9

@1706157
in ur code u r accessing (m,n) index which mean m+1 th row and n+1 column right ?
because indexing starts from zero. so u need to declare an array of size m+1 * n+1

#10

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