Camel Case (camelCase): The first letter of the word is lower case and then each first letter of the part of the word is upper case;
駝峰式命名: string helloWorld;
Pascal Case (PascalCase): The first letter of the word is upper case and then each first letter of the part of the word is upper case;
帕斯卡式命名: string HelloWorld;
Underscore Prefix (_underscore): The word begins with underscore char and for the rest of the word use camelCase rule;
底線前綴命名: string _helloWorld;
Hungarian Notation (mHungarian): a variable name starts with a group of lower-case letters and for the rest of the word use camelCase rule;
匈牙利命名法: string m_shelloWorld;