In Solidity, there are two ways to create strings: using bytes and string. bytes is used to create a raw string, whereas string is used to create a UTF-8 string. The length of string is always dynamic.

Here is an example that shows string syntaxes:

contract sample{ 
    //wherever a string literal is seen a new string is created. If the string literal is in state than it's stored in storage and if it's found inside function than its stored in memory 
    //Here myString stores "" string.  
    string myString = "";  //string literal 
    bytes myRawString; 

    function sample(string initString, bytes rawStringInit){ 
        myString = initString; 

        //myString2 holds a pointer to myString 
        string myString2 = myString; 

        //myString3 is a string in memory  
        string memory myString3 = "ABCDE"; 

        //here the length and content changes 
        myString3 = "XYZ"; 

        myRawString = rawStringInit; 

        //incrementing the length of myRawString 
        myRawString.length++; 

        //throws exception while compiling 
        string myString4 = "Example"; 

        //throws exception while compiling 
        string myString5 = initString; 
    } 
}