public static void Main()
Console.WriteLine("Hello this about strings");
public static void Method()
String s1= "Firas al souki";
String s2 = "Nissrine Nakad";
String s5= string.Concat(s1," loves ",s2);
Console.WriteLine("s1: {0} concatenate with s2: {1} to get: {2}",s1,s2,s5);
result = string.Compare(s3,s4);
Console.WriteLine("the comparison of s3: {0} and s4: {1} is {2}",s3,s4,result);
Console.WriteLine("now s6 is: {0}",s6);
Console.WriteLine("the index of character N is: {0}",index);
int n1 = s2.LastIndexOf("N");
Console.WriteLine("the last index of N is : {0}",n1);