I was Trying to make a calculator from an Arduino UNO i copied the codes from this site itself but while compiling an error came:Arduino: 1.8.4 (Windows 10), Board: "Arduino/Genuino Uno"
C:\Users\adity\OneDrive\Documents\Arduino\sketch_mar13a\sketch_mar13c\sketch_mar13c.ino:3:22: fatal error: Keypad.h: No such file or directory
#include <Keypad.h>
^
compilation terminated.
exit status 1
Error compiling for board Arduino/Genuino Uno.
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
May I know How to Solve this problem
Please Help