கட்டுப்பாட்டு கட்டமைப்பு

if condition then
    statements;
else condition then
    other statements;
end if;

   case someChar of                switch (someChar) {
      'a': actionOnA;                 case 'a': actionOnA;
      'x': actionOnX;                     break;
      'y','z':actionOnYandZ;          case 'x': actionOnX;
   end;                                   break;
                                      case 'y':
                                      case 'z': actionOnYandZ;
                                          break;
                                      default: actionOnNoMatch;
                                   }

 FOR I = 1 TO N            for I := 1 to N do begin
       xxx                       xxx
   NEXT I                    end;

   DO I = 1,N                for ( I=1; I<=N; ++I ) {
       xxx                       xxx
   END DO                    }

   DO WHILE (test)           repeat 
       xxx                       xxx 
   END DO                    until test;

   while (test) {            do
       xxx                       xxx
   }                         while (test);

A few programming languages (e.g. Smalltalk, Perl, Java, C#, Visual Basic) have special constructs which allow you to implicitly loop through all elements of an array, or all members of a set or collection.

   someCollection do: [ :eachElement | xxx ].

   foreach someArray { xxx }

   Collection<String> coll; for (String s : coll) {}

   foreach (string s in myStringCollection) { xxx }