Swift (ii) Swift string and character and logical operations

/*1.swift string and character 2. Construct string 3. String comparison 4. Numeric Operation 5. copy Operation 6. Relational Operations 7. Logical Operation 8. Interval Operation*//*//Data + processing of data//character information + processing of character information//char a = ' Zhang '//"Hello"//const char * p = "Hello"//char array[]= "Hello"*///var c:character//C = "Zhang"////var b:string = "Asdfa\0 Zhang/u0001f496"//println (b)//////var d = "ABCD Sheet"//println (count (d))/*String Construction*///Let str1 = "Hello"//Let str2 = "word"//Let str = STR1+STR2////var index = 9//Let message = "http://www.mobiletrain.org"////Let urlhead = "\ (message)/pic"////println (Urlhead)/*string comparison*/Let str="Hello"ifstr >"Aello"{println (str)}let str1="Apple"ifStr1.hassuffix ("le") {println (str1)}let str2="Apple"println (str1.lowercasestring) let Str3="255"Let D= Str3.toint ()!println (d)/*interval operation: (a...b) 1...3->1,2,3*/ for_inch 1...5{println ("Hello")} forIinch 1...5{println (i)} forIinch 1.. <5{println (i)}

Swift (ii) Swift string and character and logical operations