using ref keyword in c#
//function without ref keyword
int functionintger(int number){
number += 30 ;
return number ;
}
int value1 = 100 ;
Console.WriteLine(functionintger(value1));
Console.WriteLine(value1);
//function with ref keyword
Console.WriteLine();
int functionintger2(ref int number){
number += 30 ;
return number ;
}
int value2 = 100 ;
Console.WriteLine(functionintger2(ref value2));
Console.WriteLine(value1);