Help in PixelGray$**$ threshold$($PixelGray$**$ matrix, int" width, int$*$ height$)$;

a$.$ This function should create a new $2D$ matrix. Dynamically allocate the storage $(2D$

matrix$)$ for the new matrix.

b$.$ Thresholding

i$.$ If original value $>80--$ store $255$

ii$.$ Otherwise $-$ store $0$

c$.$ Return the new $2D$ matrix.

PixelGray$**$ rotate$($PixelGray$""$ matrix, int" width, int" height$)$;

a$.$ This function should create a new $2D$ matrix. Dynamically allocate the storage

matrix$)$ for the new matrix.

b$.$ Rotate the original $2$D matrix and store the result as the new matrix.

i$.$ Rotation can be achieved by matrix transpose $($swapping rows & column$).$

c$.$ Return the new $2D$ matrix.

Input: lenna.pgm