can anyone help me know about in what way should I write a program so that it can give the output of the diagonal of 3×3 array??

Answer 1

#include <iostream>

int main
{
int arr[3][3] = { {1, 2, 3}, {4, 5, 6}, {7, 8, 9} };

for (int y = 0; y < 3; y++)
{
for (int x = 0; x < 3; x++)
std::cout << arr[y][x];
std::cout << "\n";
}
}

Answer 2

#include <iostream>
#include <string>

int main()
{
int x = 0, arr[3][3] = { {1, 2, 3}, {4, 5, 6}, {7, 8, 9} };

for (int y = 0; y < 3; y++)
{
std::cout << arr[y][x] << "\n" << std::string(" ", x + 1);
x++;
}
}

Apologies, misread. This code runs fine when I compile it on Windows (Visual Studio and Code::Blocks). I get the output:

1
5
9

If I tried to compile the code via SoloLearn, the output does not follow any particular pattern like the one I set it to do, which is a bit annoying.

Answer 3

#include <iostream>

int main()
{
int arr[3][3] = { {1, 2, 3}, {4, 5, 6}, {7, 8, 9} };

for (int y = 0, x=0; y < 3,x<3; y++,x++)
{
std::cout << arr[y][x];
std::cout <<"\n";
}
}

you can initialise many variables in a for loop
I guess there's a limit of 256... I'm not sure but you won't initialise so many in a for loop :)

Answer 4

it is printing the whole array #Cohen Creber not only the diagonal!