Loops/Continue: Difference between revisions
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=={{header|C sharp|C#}}== |
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{{trans|Java}} |
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<lang csharp>using System; |
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class Program { |
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static void Main(string[] args) { |
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for (int i = 1; i <= 10; i++) { |
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Console.Write(i); |
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if (i % 5 == 0) { |
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Console.WriteLine(); |
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continue; |
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} |
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Console.Write(", "); |
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} |
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} |
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}</lang> |
}</lang> |
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Revision as of 21:10, 22 April 2009
You are encouraged to solve this task according to the task description, using any language you may know.
Show the following output using one loop.
1, 2, 3, 4, 5 6, 7, 8, 9, 10
Ada
Ada has no continue reserved word, nor does it need one. The continue reserved word is only syntactic sugar for operations that can be achieved without it as in the following example.
<lang ada> with Ada.Text_Io; use Ada.Text_Io;
procedure Loop_Continue is begin
for I in 1..10 loop Put(Integer'Image(I)); if I mod 5 = 0 then New_Line; else Put(","); end if; end loop;
end Loop_Continue; </lang>
ALGOL 68
ALGOL 68 has no continue reserved word, nor does it need one. The continue reserved word is only syntactic sugar for operations that can be achieved without it as in the following example:
FOR i FROM 1 TO 10 DO print ((i, IF i MOD 5 = 0 THEN new line ELSE "," FI )) OD
Output:
+1, +2, +3, +4, +5 +6, +7, +8, +9, +10
AWK
<lang awk>BEGIN {
for(i=1; i <= 10; i++) { printf("%d", i) if ( i % 5 == 0 ) { print continue } printf(", ") }
}</lang>
C
<lang c>for(int i = 1;i <= 10; i++){
printf("%d", i); if(i % 5 == 0){ printf("\n"); continue; } printf(", ");
}</lang>
C++
<lang cpp>for(int i = 1;i <= 10; i++){
cout << i; if(i % 5 == 0){ cout << endl; continue; } cout << ", ";
}</lang>
C#
<lang csharp>using System;
class Program {
static void Main(string[] args) { for (int i = 1; i <= 10; i++) { Console.Write(i);
if (i % 5 == 0) { Console.WriteLine(); continue; }
Console.Write(", "); } }
}</lang>
ColdFusion
Remove the leading space from the line break tag.
<cfscript> for( i = 1; i <= 10; i++ ) { writeOutput( i ); if( 0 == i % 5 ) { writeOutput( "< br />" ); continue; } writeOutput( "," ); } </cfscript>
D
<lang d>for(int i = 1;i <= 10; i++){
writef(i); if(i % 5 == 0){ writefln(); continue; } writef(", ");
}</lang>
Fortran
<lang fortran>do i = 1, 10
write(*, '(I0)', advance='no') i if ( mod(i, 5) == 0 ) then write(*,*) cycle end if write(*, '(A)', advance='no') ', '
end do</lang>
Haskell
As a functional language, it is not idiomatic to have true loops - recursion is used instead. Below is one of many possible implementations of the task. The below code uses a guard (| symbol) to compose functions differently for the two alternative output paths, instead of using continue like in an imperative language.
<lang haskell> import Control.Monad (forM) main = forM [1..10] out
where out x | (x `mod` 5 == 0) = (putStrLn . show) x | otherwise = (putStr . (++", ") . show) x</lang>
J
J is array-oriented, so there is very little need for loops. For example, one could satisfy this task this way:
_2}."1'lq<, >'8!:2>:i.2 5
J does support loops for those times they can't be avoided (just like many languages support gotos for those time they can't be avoided).
3 : 0 ] 10 z=.'' for_i. 1 + i.y do. z =. z , ": i if. 0 = 5 | i do. z 1!:2 ]2 z =. '' continue. end. z =. z , ', ' end. i.0 0 )
Though it's rare to see J code like this.
Java
<lang java>for(int i = 1;i <= 10; i++){
System.out.print(i); if(i % 5 == 0){ System.out.println(); continue; } System.out.print(", ");
}</lang>
MAXScript
for i in 1 to 10 do ( format "%" i if mod i 5 == 0 then ( format "\n" continue ) continue format ", " )
Modula-3
Modula-3 defines the keyword RETURN as an exception, but when it is used with no arguments it works just like continue in C.
Note, however, that RETURN only works inside a procedure or a function procedure; use EXIT otherwise.
Module code and imports are omitted.
FOR i := 1 TO 10 DO IO.PutInt(i); IF i MOD 5 = 0 THEN IO.Put("\n"); RETURN; END; IO.Put(", "); END;
Perl
<lang perl>foreach (1..10) {
print $_; if ($_ % 5 == 0) { print "\n"; next; } print ', ';
}</lang>
PHP
<lang php>for ($i = 1; $i <= 10; $i++) {
echo $i; if ($i % 5 == 0) { echo "\n"; continue; } echo ', ';
}</lang>
Pop11
lvars i; for i from 1 to 10 do printf(i, '%p'); if i rem 5 = 0 then printf('\n'); nextloop; endif; printf(', ') endfor;
Python
<lang python>for i in xrange(1,11):
if i % 5 == 0: print i continue print i, ",",</lang>
Ruby
<lang ruby>for i in 1..10 do
print i if i % 5 == 0 then puts next end print ', '
end</lang>
Tcl
<lang tcl>for {set i 1} {$i <= 10} {incr i} {
puts -nonewline $i if {$i % 5 == 0} { puts "" continue } puts -nonewline ", "
}</lang>
UnixPipes
yes \ | cat -n | head -n 10 | xargs -n 5 echo | tr ' ' ,
Visual Basic .NET
For i = 1 To 10 Console.Write(i) If i Mod 5 = 0 Then Console.WriteLine() Else Console.Write(", ") End If Next