Csharp/CSharp Tutorial/Statement/Break

Find the smallest factor of a value

<source lang="csharp">using System;

class MainClass {

 public static void Main() {  
   int factor = 1; 
   int num = 1000; 
     
   for(int i=2; i < num/2; i++) {  
     if((num%i) == 0) { 
       factor = i; 
       break; // stop loop when factor is found 
     } 
   }  
   Console.WriteLine("Smallest factor is " + factor);  
 }  

}</source>

Smallest factor is 2

Use break with a foreach.

<source lang="csharp">using System;

class MainClass {

 public static void Main() { 
   int sum = 0; 
   int[] nums = new int[10]; 

   for(int i = 0; i < 10; i++)  
     nums[i] = i; 

   foreach(int x in nums) { 
     Console.WriteLine("Value is: " + x); 
     sum += x; 
     if(x == 4) 
        break; // stop the loop when 4 is obtained 
   } 
   Console.WriteLine("Summation of first 5 elements: " + sum); 
 } 

}</source>

Value is: 0
Value is: 1
Value is: 2
Value is: 3
Value is: 4
Summation of first 5 elements: 10

Using break to exit a do-while loop

<source lang="csharp">using System;

class MainClass {

 public static void Main() {  
   int i; 

   i = -10;     
   do { 
     if(i > 0) 
        break; 
     Console.Write(i + " "); 
     i++; 
   } while(i <= 10); 
 
   Console.WriteLine("Done");  
 }  

}</source>

-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 Done

Using break to exit a for loop

<source lang="csharp">using System;

class MainClass {

 public static void Main() {  

   // use break to exit this loop 
   for(int i=-10; i <= 10; i++) {  
     if(i > 0) break; // terminate loop when i is positive 
     Console.Write(i + " ");  
   }  
   Console.WriteLine("Done");  
 }  

}</source>

-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 Done

Using break with nested loops

<source lang="csharp">using System;

class MainClass {

 public static void Main() {  
 
   for(int i=0; i<3; i++) {  
     Console.WriteLine("Outer loop count: " + i);  
     Console.Write("    Inner loop count: "); 

     int t = 0;             
     while(t < 100) {  
       if(t == 10) 
           break; // terminate loop if t is 10  
       Console.Write(t + " ");  
       t++; 
     }  
     Console.WriteLine();  
   }  
   Console.WriteLine("Loops complete.");  
 }  

}</source>

Outer loop count: 0
    Inner loop count: 0 1 2 3 4 5 6 7 8 9
Outer loop count: 1
    Inner loop count: 0 1 2 3 4 5 6 7 8 9
Outer loop count: 2
    Inner loop count: 0 1 2 3 4 5 6 7 8 9
Loops complete.