1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 uses crt; var r,t:integer; w:char; s:real; begin clrscr; writeln('vvedite operatsiyu'); readln(w); write('vvedite chisla r,t'); readln(r,t); case w of '+':s:=r+t; '-':s:=r+t; '/':s:=r/t; '*':s:=r*t; end; writeln('otvet',s:3:2); readln; end.
может так?