Add 2 interface#47

ViktorMurashovV wants to merge 3 commits intoISUCT:Viktor_MurashovISUCT/TProgramming_147_2018:Viktor_Murashovfrom

ViktorMurashovV:Viktor_MurashovViktorMurashovV/TProgramming_147_2018:Viktor_MurashovCopy head branch name to clipboard