From b2b1733fec263da708050275b4feaf08d684fedd Mon Sep 17 00:00:00 2001
From: mickenordin <mik@elnord.in>
Date: Sat, 18 Jun 2016 20:21:18 +0200
Subject: [PATCH] Also multiplication

---
 cnumber.cpp | 5 +++--
 cnumber.hpp | 6 +++++-
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/cnumber.cpp b/cnumber.cpp
index 86a78b9..868dfdf 100644
--- a/cnumber.cpp
+++ b/cnumber.cpp
@@ -3,8 +3,9 @@
 
 
 int main() {
-	cnumber a(-1, 4);
-	cnumber b(4, -7);
+	cnumber a(1, -3);
+	cnumber b(2, 5);
 
 	cout << "a = " << a << " b = " <<  b << " a + b =  " << a + b << endl;
+	cout << "a = " << a << " b = " <<  b << " a * b =  " << a * b << endl;
 }
diff --git a/cnumber.hpp b/cnumber.hpp
index 90b2c54..d2ed41c 100644
--- a/cnumber.hpp
+++ b/cnumber.hpp
@@ -18,10 +18,14 @@ class cnumber {
 			signi = get_sign(i);
 			
 		}
-		cnumber operator+(const cnumber& that) {
+		cnumber operator+(const cnumber &that) {
 			cnumber z(that.r + this->r, that.i + this->i);
 			return z;
 		}
+		cnumber operator*(const cnumber &that) {
+			cnumber z( (that.r * this->r ) - (that.i * this->i) , (that.r * this->i) + (this->r * that.i) );
+			return z;
+		}
 
 		friend ostream &operator<<( ostream &os, const cnumber &z ) { 
 			os << z.r << (z.signi ? '+' : '\0' ) <<  z.i << 'i';