Out parameter and normal parameter difference?

Question

What is the difference between Out parameter and a normal parameter in c#

Vignesh Mani · Answer

You should assign the value for normal parameter before pass as a argument but you need not assign value for out parameter.

Prathap · Answer

Thanks Rajeesh Menoth  Vignesh Mani

Pankaj Kumar Choudhary · Answer

Hello @Partap Out parameter are reference type and normal parameter are value type. Mainly Out parameters are use for return more than one value from function

Jaipal Reddy · Answer

Out Parameter If you want to pass a variable as out parameter you don’t need to initialize it before you pass it as out parameter to method. Out keyword also will pass parameter as a reference but here out parameter must be initialized in called method before it return value to calling method. Declaration of Out Parameter Generally we will use out parameters like as shown below int ij; // No need to initialize variable Outsample(out i out j); If you observe above code first we declared variable and we it pass a out parameter to Outsample method without initialize the values to variables

Upendra Pratap Shahi · Answer

out (Output) Parameter Output parameter is used to pass the result back to the calling function. ‘out’ keyword is used to declare the parameter as an Output parameter. Similar to a reference parameter an output parameter does not create a new storage location. Instead it becomes an alias to the parameter in the calling method. Example of out Parameter 1 2 3 4 5 6 7 8 9 10 11 12 13 using System ; class MyOutput { static void Square ( int p  out int q ) { q = p* p ; } public static void main ( ) { int x ; Square ( 5  out x ) ; Console . WriteLine ( Square of a no. is :  + x ) ; } } In the above program x is declared as an out parameter in calling function and as you can see x has not been initialized. When Square function terminates the value of q will be copied to the output parameter x. Parameter is variable in the declaration of function

Rajeesh Menoth · Answer

Welcome Prathap  accept any of the answer then only another person know the correct solution...

Rajeesh Menoth · Answer

Parameter is variable in the declaration of function Out Parameter If you want to pass a variable as out parameter you don’t need to initialize it before you pass it as out parameter to method. Out keyword also will pass parameter as a reference but here out parameter must be initialized in called method before it return value to calling method.