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Q&A Print value from constructor

#include<iostream> using namespace std; class Book{ public: string title; string author; int pages; Book(string aTitle, string aAuthor, int aPages){ aTitle = title; ...

1 answer · posted 3y ago by deleted user · edited 3y ago by Alexei‭

Question c++ constructor initialization

#2: Post edited by

Alexei‭ · 2021-06-30T18:57:41Z (over 3 years ago)
added relevant tags

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```cpp
#include<iostream>
using namespace std;
class Book{
public:
string title;
string author;
int pages;
Book(string aTitle, string aAuthor, int aPages){
aTitle = title;
aAuthor = author;
aPages = pages;
}
};
int main(){
Book book1("Harry","JK",500);
Book book2("Lord","Tolkein",450);
cout << "Title : " << book1.title << "; Author : " << book1.author << "; Pages : " << book1.pages;
return 0;
}
```
This outputs
>Title : ; Author : ; Pages : 404155672%
~~Output I expected :~~
>Title : Harry; Author : JK; Pages : 500;
I had tried to get the same output using `printf` also.
```cpp
printf("Title : %s",book1.title);
```
This only outputs,
>Title : ;
String from constructor doesn't show properly. Even, in first code Integer had converted to hexadecimal.

```cpp
#include<iostream>
using namespace std;
class Book{
public:
string title;
string author;
int pages;
Book(string aTitle, string aAuthor, int aPages){
aTitle = title;
aAuthor = author;
aPages = pages;
}
};
int main(){
Book book1("Harry","JK",500);
Book book2("Lord","Tolkein",450);
cout << "Title : " << book1.title << "; Author : " << book1.author << "; Pages : " << book1.pages;
return 0;
}
```
This outputs
>Title : ; Author : ; Pages : 404155672%
The output I expected :
>Title : Harry; Author : JK; Pages : 500;
I had tried to get the same output using `printf` also.
```cpp
printf("Title : %s",book1.title);
```
This only outputs,
>Title : ;
String from constructor doesn't show properly. Even, in first code Integer had converted to hexadecimal.

c++

c++ constructor initialization

#1: Initial revision by (deleted user) · 2021-06-30T04:51:02Z (over 3 years ago)

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Print value from constructor

```cpp
#include<iostream>
using namespace std;

class Book{
	public:
		string title;
		string author;
		int pages;
		Book(string aTitle, string aAuthor, int aPages){
			aTitle = title;
			aAuthor = author;
			aPages = pages;
			
		}
};

int main(){
	Book book1("Harry","JK",500);
	
	Book book2("Lord","Tolkein",450);
	cout << "Title : " << book1.title << "; Author : " << book1.author << "; Pages : " << book1.pages;
	return 0;
}
```

This outputs 

>Title : ; Author : ; Pages : 404155672%

Output I expected :

>Title : Harry; Author : JK; Pages : 500;

I had tried to get the same output using `printf` also.

```cpp
printf("Title : %s",book1.title);
```

This only outputs,
>Title : ;

String from constructor doesn't show properly. Even, in first code Integer had converted to hexadecimal.

c++

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