[SOLVED]Why this code is not giving correct output? (Multiply 2 matrices) c++

Question

https://code.sololearn.com/cgfKtdTIL7Mg/?ref=app

If I give M1(2*1) =
1
2
And M2(1*2) =
3 4
Then M3(2*2) should be =
3 4
6 8
But output is
0 0
0 0

And for other values also, it gives incorrect outputs (not always o).
I can't figure out the error here. Please help.

(And yes, I need to find the error here not any other method to find multiplication)

(Ignore spelling or grammar mistakes, if any😁)

Answer 1

Yugal Kishore at line 76 , it is M2 not M1

Answer 2

Abhay thanks.
This silly mistake took 1 hour of frustration!

Answer 3

Happens sometimes , happy coding :)

Answer 4

On the for loop with the comment "getting M2"
You are using M1 when you want to use M2

Answer 5

Anastacia Ru yup I got it now. thanks for answering.