Doubts regarding array definition

#1

When I am running this code, it is showing expected result
#include
using namespace std;

int main()
{

int arr[5][3]={0};
//Iterate over the array
for(int rows=0;rows<=4;rows++)
{
	for(int cols=0;cols<=2;cols++)
	{
		cout<<arr[rows][cols];
	}
}

return 0;
}

However, if I run this code, the prompt returns to itself without showing any output, why? Is this related to time complexity?I am new to that.
#include
using namespace std;

int main()
{

int arr[1000][1000]={0};
//Iterate over the array
for(int rows=0;rows<=4;rows++)
{
	for(int cols=0;cols<=2;cols++)
	{
		cout<<arr[rows][cols];
	}
}

return 0;
}

#2

hi @distyb04

int arr[1000][1000]={0};
//Iterate over the array
for(int rows=0;rows<=4;rows++)
{
	for(int cols=0;cols<=2;cols++)
	{
		cout<<arr[rows][cols];
	}
}

in this code u will get no o/p only becoz in array u can access elemets by position only…
like arr[i][j] while running loop… at this index where u are trying to print, there may be no element present so u get no o/p…

for printing the whole array use the first code only that u shared…

#3

okay thnks understood

1 Like
#4

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