Q.What Difference For Loop and For-Each Loop in C#?

Ans:-

Why Loops

If we want to perform the repetitive tasks “n” number of times or an infinite number of times then it is good practice to use loops.

For Loops:

For loops are appropriate loops when you know exactly how many times iteration you want in statements within the loop.
For loop iterates a statement or a block of statements repeatedly until a specified expression evaluates to false.

Syntax:

for (; Boolean-expression;)

….Statement

}

For Example:

for(int I =0; I <= 20; I++)

if(I%2 == 0)

Console.WriteLine(“Print Even Numbers 0}”,I);

}

}

ForEach Loops

For-each loop is used to iterate through the items in object collections, List generic collections or array list collections.

Syntax:

foreach (  )

….Statement

}

For Example:

string[] AnimalNames = new string[] "Dog","Tiger","Panda","Parot" }

foreach (string animal in AnimalNames)

Console.WriteLine(“Name of animal is 0}“,animal);

}

Difference Between For and For Each Loop

1. For loop iterates a statement or a block of statements repeatedly until a specified expression evaluates to false.
2. For-each loop is used to iterate through the items in object collections, List generic collections or array list collections.
3. Performance: For Loops are faster than For-each Loop. If we iterate array list or any collection with for loop and for-each loop then you will find time consumed by a for-each loop is much more than for loop so For loops are faster than For-each loop.