Declare loop control variable inside the for : For « Statement « C# / CSharp Tutorial






using System; 
 
class MainClass {   
  public static void Main() { 
    int sum = 0; 
    int fact = 1; 
 
    for(int i = 1; i <= 5; i++) {  
      sum += i;  // i is known throughout the loop 
      fact *= i; 
    } 
 
    // But, i is not known here. 
 
    Console.WriteLine("Sum is " + sum); 
    Console.WriteLine("Factorial is " + fact); 
  }   
}
Sum is 15
Factorial is 120








4.3.For
4.3.1.for loop
4.3.2.Demonstrate a block of code inside if statement
4.3.3.Use block inside for statement: Compute the sum and product of the numbers from 1 to 10
4.3.4.Use byte to control for loop
4.3.5.A negatively running for loop
4.3.6.Nested for loop to calculate prime number
4.3.7.Use commas in a for statement.
4.3.8.Use commas in a for statement to find the largest and smallest factor of a number
4.3.9.Loop condition can be any bool expression.
4.3.10.Parts of the for can be empty.
4.3.11.Move 'update' out of the for loop
4.3.12.For loop with multiple expressions
4.3.13.The body of a loop can be empty
4.3.14.Declare loop control variable inside the for
4.3.15.Using break to exit a for loop