In case of paramterized constructor, you can use following syntax to initialize the fields:Line::Line( double len): length(len){ cout << "Object is being created, length = " << len << endl;}Above syntax is equal to the following syntax:Line::Line( double len){ cout << "Object is being created, length = " << len << endl; length = len;}If for a class C, you have multiple fields X, Y, Z etc to be initialize then use can use same syntax and separate the fields by comma as follows:C::C( double a, double b, double c): X(a), Y(b), Z(c){ ....} C++
Topic: Constructors and destructors
What are using Initialization Lists to Initialize Fields ?
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What are Class Constructors and destructors in C++ ?
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What is the use of Destructors
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