c 2b 2b struct constructor

1struct TestStruct {
2        int id;
3        TestStruct() : id(42)
4        {
5        }
6};
7

1
2struct Rectangle {
3    int width;  // member variable
4    int height; // member variable
5
6    // C++ constructors
7    Rectangle()
8    {
9        width = 1;
10        height = 1;
11    }
12
13    Rectangle( int width_  )
14    {
15        width = width_;
16        height = width_ ;
17    }
18
19    Rectangle( int width_ , int height_ )
20    {
21        width = width_;
22        height = height_;
23    }
24    // ...
25};
26
27

1#include<iostream>
2#include<string>
3using namespace std;
4struct student
5{
6  char name [20];
7int age;
8float marks;
9};
10int main()
11{
12student s;
13cout<<"enter student name : "<<endl;
14cin>>s.name;
15cout<<"enter age : "<<endl;
16cin>>s.age;
17cout<<"enter marks : "<<endl;
18cin>>s.marks;
19cout<<"***********************"<<endl;
20cout<<"name : "<<s.name<<endl;
21cout<<"age : "<<s.age<<endl;
22cout<<"marks : "<<s.marks<<endl;
23return 0;
24}