how to rotate 2d array 90 degree anticlockwise by using c programming?

Answer 1

Hello,
Rotating an image requires math knowledge as well as experience using the graphic libraries. Take a look at the links I provided below, especially that google groups link.

Basically the operations to rotate the image is to recreate the image the examples below clearly indicate the steps.

Good Luck

Answer 2

you can think of it as matrix
of dimension 2*n
1 2
3 4
4 5

so it should look like
1 3 4
2 4 5

Answer 3

Sounds a lot like homework to me... figure it out yourself or you won't learn anything.