aSHIK

result(rahim,3.4) .
result(sadek,3.7 ) .
result(khoba,3.6) .
result(rafi,3.2) .
result(akib,3.2) .
result(rakib,3.9) .
result(pronab,4.0) .
result(hridoy,3.9) .
result(david,3.8) .
result(rahul,3.0) .

get_result :-
    write("whose result do you want to know?"), nl,
    read(X), nl,
    result(X,Y), nl,
    write(Y).