[Solve]Problem with c++ in code block

Question

using variable_name * = 3 , I already declare the variable is 1 . cant print out couz expected primary-expression before = problem . at line 2
int a = 1;
a * = 3 ; // having problem right here

Answer 1

Delete the space before the '=', the operator should look like this:

a *= 3; // <- *= not the same with * =