task19
task20
task22
Tasks 23, 24, 27.
Task 23 & 24
Task 25
Task 25
Task 26
Task 25, 23
task 24
Task 27
Merge branch 'master' of https://github.com/gsvgit/142_13_1
task 27
task 27
deleted spaces

deleted spaces
New program 25.
Merge branch 'master' of https://github.com/gsvgit/142_13_1
changed type

changed type
fixed mistakes
changed function, now its count numbers