ParameterExpression param = Expression.Parameter(typeof(int), "n"); //create parameter expression of type int with name "n"
ParameterExpression[] parameters = new ParameterExpression[] { Expression.Parameter(typeof(int), "x"), //parameter expression x of type int. Expression.Parameter(typeof(int), "y") //parameter expression y of type int. };In this example, we create an array of `ParameterExpression` that contains two parameters "x" and "y" of type `int`. These examples are using the `System.Linq.Expressions` package library, which is a part of the .NET framework.