This code is an assignment #4 in subject of Software Testing and Quality Assurance 2110724 in year 2015 to use triangle application in Windows > `triangle.exe 3 4 5` in OSX or others > `triangle 3 4 5` 3 4 5 are assumed of 3 sides (a, b , c) of triangle if there is any bug or spelling wrong or any bad grammar please contact: wasith@silom313.com written by: Wasith Theerapattrathamrong.