Added pre-increment operator and += operator

Signed-off-by: Olivier Gayot <og@satcom1.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/number.cpp b/number.cpp
index c337a34..57dbcae 100644
--- a/number.cpp
+++ b/number.cpp
@@ -149,6 +149,25 @@ number::operator!=(const number &n) const
 }
 
 /* }}} */
+/* Assignment operators {{{ */
+
+number &
+number::operator+=(const number &n)
+{
+    *this = *this + n;
+
+    return *this;
+}
+
+number &
+number::operator++()
+{
+    *this = *this + 1;
+
+    return *this;
+}
+
+/* }}} */
 
 std::ostream &
 operator<<(std::ostream &os, const number &n)