Write a function to add two matrices and and save the result in $.$ The header of the function is:

const int N $=3$;

void addMatrix$($const double a$[][$N$],$const double b$[][$N$],$ double c$[][$N$])$;

Each elementis. Write a test program that prompts the user to enter two $3-$by$-3$ matrices and displays their addition.

Sample Run

Enter matrix$1$: $123456789$

Enter matrix$2$: $02314\mathrm{.}52\mathrm{.}21\mathrm{.}14\mathrm{.}35\mathrm{.}2$

The addition of the matrices is

$123024147$

$456+14\mathrm{.}52\mathrm{.}2=59\mathrm{.}58\mathrm{.}2$

$7891\mathrm{.}14\mathrm{.}35\mathrm{.}28\mathrm{.}112\mathrm{.}314\mathrm{.}2$