Solved majority element in C++

Signed-off-by: Ionut Radu <ihonius@gmail.com>
Solved multiple by 7 (efficient method) in C

Signed-off-by: Ionut Radu <ihonius@gmail.com>
Solved count words in C

Signed-off-by: Ionut Radu <ihonius@gmail.com>
Solved count words in C++

Signed-off-by: Ionut Radu <ihonius@gmail.com>