Can i multiply a binary one with a decimal number?

I was trying to convert a decimal number into binary vector. I was assuming i could use those vectors in the equation next and store the values but it gives me weird answers? How can i tackle this problem?

Answer 1

[Star Strider]

You can ‘cheat’ and convert ‘str’ to numeric by subtracting the character '0' from it:

str = dec2bin(j,8) - '0';