Cycles
C
C++
C#
Common Lisp
Dart
F#
Go
Java
JavaScript
Kotlin
Python
Rust
C
C
#include <stdio.h>
int main(void)
{
// for loop
for(int i = 1; i < 6; i++)
{
printf("%d", i);
}
// while loop
int n = 1;
while(n < 6)
{
printf("%d", n);
n++;
}
// do-while loop
int k = 1;
do
{
printf("%d", k);
k++;
}
while(k < 6);
}
C++
C++
#include <iostream>
int main()
{
// for loop
for(int i{1}; i < 6; i++)
{
std::cout << i << std::endl;
}
// sequence iteration
for(char c : "Hello")
{
std::cout << c << std::endl;
}
// while loop
int n{1};
while(n < 6)
{
std::cout << n << std::endl;
n++;
}
// do-while loop
int k{1};
do
{
std::cout << k << std::endl;
k++;
}
while(k < 6);
}
C#
C#
// for loop
for(int i = 1; i < 6; i++)
{
Console.WriteLine(i);
}
// while loop
int n = 1;
while(n < 6)
{
Console.WriteLine(n);
n++;
}
// do-while loop
int k = 1;
do
{
Console.WriteLine(k);
k++;
}
while(k < 6);
// sequence iteration
foreach(var c in "12345")
{
Console.WriteLine(c);
}
Common Lisp
Lisp
; analogous to a for loop, i is initialized to 0
(dotimes (i 6) (print i))
; analogous to a while loop
(do ((n 1 (+ n 1)))
((= n 6))
(format t "~a~%" n))
; analogous to do-while/while
(let ((k 1))
(loop
(format t "~a~%" k)
(setf k (+ k 1))
(when (> k 5)
(return))))
; list iteration
(dolist (n (list 1 2 3 4 5)) (print n))
Returning a value from a loop:
Lisp
(format t "Return value: ~a~%"
(do ((n 1 (+ n 1)))
((= n 6) n)
(format t "~a~%" n)))
Dart
Dart
void main() {
// for loop
for(int i=1; i <6; i++)
{
print(i);
}
// sequence iteration
for(var c in [1, 2, 3, 4, 5])
{
print(c);
}
// while loop
int n = 1;
while(n < 6)
{
print(n);
n += 1;
}
// do-while loop
int k = 1;
do
{
print(k);
k++;
}
while(k < 6);
}
F#
F#
// for loop
for i = 1 to 5 do
printfn $"{i}"
// while loop
let mutable n = 1;
while n < 6 do
printfn $"{n}"
n <- n + 1
// sequence iteration
for n in 1..5 do
printfn $"{n}"
Go
Go
package main
import "fmt"
func main() {
// for loop
for i := 1; i < 10; i++ {
fmt.Println(i);
}
// sequence iteration (array)
var nums = [5]int{1, 2, 3, 4, 5}
for _, value := range nums{
fmt.Println(value)
}
}
Java
Java
class Program {
public static void main(String[] args) {
// for loop
for(int i = 1; i < 6; i++){
System.out.println(i);
}
// while loop
int n = 1;
while(n < 6){
System.out.println(n);
n++;
}
// do-while loop
int k = 1;
do{
System.out.println(k);
k++;
}
while(k < 6);
// sequence iteration
for(var c : new int[] { 1, 2, 3, 4, 5 }){
System.out.println(c);
}
}
}
JavaScript
JavaScript
// for loop
for(let i = 0; i < 6; i++){
console.log(i);
}
// sequence iteration
for(let c of [1, 2, 3, 4, 5]){
console.log(c);
}
// object property iteration
const person = {name: "Tom", age: 39};
for(let prop in person){
console.log(prop, person[prop]);
}
// while loop
let n = 1;
while(n < 6){
console.log(n);
n += 1;
}
// do-while loop
let k = 1;
do{
console.log(k);
k++;
}
while(k < 6);
Kotlin
Kotlin
fun main() {
// sequence iteration
for(i in 1..5)
{
println(i);
}
// while loop
var n = 1;
while(n < 6)
{
println(n);
n += 1;
}
// do-while loop
var k = 1;
do
{
println(k);
k++;
}
while(k < 6);
}
Python
Python
# for loop
for i in range(1, 6):
print(i)
# while loop
n = 1
while n < 6:
print(n)
n += 1
Rust
Rust
fn main(){
// sequence iteration
for i in 1..6 {
print!("{} ", i);
}
println!("");
// while loop
let mut n = 1;
while n < 6 {
print!("{} ", n);
n += 1;
}
println!("");
// loop construct
let mut k = 1;
loop {
print!("{} ", k);
k += 1;
if k == 6 { break; }
}
}
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