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Articles by Nishtha Thakur
Page 10 of 40
trunc() , truncf() , truncl() in C language
Here we will see three functions. These functions are trunc(), truncf() and the truncl(). These functions are used to convert floating point values into truncated form.The trunc() FunctionThis function is used to truncate double type value. And return only the integer part. The syntax is like below.double trunc(double argument)Example#include #include main() { double a, b, x, y; x = 53.26; y = 75.86; a = trunc(x); b = trunc(y); printf("The value of a: %lf", a); printf("The value of a: %lf", b); }OutputThe value of a: 53.000000 The value of a: 75.000000The ...
Read MoreC++ program to print Happy Birthday
This is a C++ program to print Happy Birthday.AlgorithmBegin Take a str1 which takes the next character of our desired ouput like for H it will be G. Assign the string to a pointer p. Make a while loop till *p != NULL. Go next character of the string print it and after that go the nextposition of string. Print the result. EndExample#include using namespace std; main(){ char str[]="G`ooxAhqsgc`x",*p; p=str; while(*p!='\0') ++*p++; cout
Read MoreVariable collection name in MongoDB shell with JavaScript?
Yes, you can set a variable collection name in MongoDB shell using JavaScript. Let us first create a collection with documents −> db.employeeInformation.insertOne({"EmployeeName":"John Smith", "EmployeeAge":24, "EmployeeSalary":450000}); { "acknowledged" : true, "insertedId" : ObjectId("5cc6d06baf8e7a4ca6b2ad97") }Following is the query to display all documents from a collection with the help of find() method −> db.employeeInformation.find();This will produce the following output −{ "_id" : ObjectId("5cc6d06baf8e7a4ca6b2ad97"), "EmployeeName" : "John Smith", "EmployeeAge" : 24, "EmployeeSalary" : 450000 }Here is the query to set variable collection name in MongoDB shell using JavaScript.Case 1 − Set variable with varThe query is as follows −> var status=db.employeeInformation; ...
Read MoreHow do you perform an AND query on an array in MongoDB?
To get the same result like AND in MongoDB, use the $all operator. Let us first create a collection with documents −> db.andQueryDemo.insertOne({"StudentName":"Carol Taylor", "FavouriteSubject":["C", "Java", "MongoDB", "MySQL"]}); { "acknowledged" : true, "insertedId" : ObjectId("5cc73e7a8f9e6ff3eb0ce433") } > db.andQueryDemo.insertOne({"StudentName":"David Miller", "FavouriteSubject":["C++", "Java", "MongoDB", "SQL Server"]}); { "acknowledged" : true, "insertedId" : ObjectId("5cc73ea48f9e6ff3eb0ce434") } > db.andQueryDemo.insertOne({"StudentName":"Carol Taylor", "FavouriteSubject":["Python", "PL/SQL"]}); { "acknowledged" : true, "insertedId" : ObjectId("5cc73ed38f9e6ff3eb0ce435") }Following is the query to display all documents from a collection with the help of find() method −> db.andQueryDemo.find().pretty();This will produce the following output −{ "_id" : ObjectId("5cc73e7a8f9e6ff3eb0ce433"), ...
Read MoreHow to get tag count in MongoDB query results based on list of names?
You can use $in operator. Let us first create a collection with documents −> db.tagCountDemo.insertOne({"ListOfNames":["John", "Sam", "Carol"]}); { "acknowledged" : true, "insertedId" : ObjectId("5cd64b387924bb85b3f48944") } > db.tagCountDemo.insertOne({"ListOfNames":["Bob", "David", "John"]}); { "acknowledged" : true, "insertedId" : ObjectId("5cd64b4b7924bb85b3f48945") } > db.tagCountDemo.insertOne({"ListOfNames":["Mike", "Robert", "Chris"]}); { "acknowledged" : true, "insertedId" : ObjectId("5cd64b5d7924bb85b3f48946") } > db.tagCountDemo.insertOne({"ListOfNames":["James", "Carol", "Jace"]}); { "acknowledged" : true, "insertedId" : ObjectId("5cd64b717924bb85b3f48947") }Following is the query to display all documents from a collection with the help of find() method −> db.tagCountDemo.find().pretty();This will produce the following output −{ "_id" : ObjectId("5cd64b387924bb85b3f48944"), "ListOfNames" : ...
Read MoreHow to get this nodes’s parent in a JTree with Java?
Let’s say we want the parent of a node, then use the getParent() method -node3.getFirstChild()You can also get the parent of child node. Here, “nine” is the child node −nine.getParent()The output is as follows displaying this node’s parent on Console −Examplepackage my; import javax.swing.JFrame; import javax.swing.JTree; import javax.swing.tree.DefaultMutableTreeNode; public class SwingDemo { public static void main(String[] args) throws Exception { JFrame frame = new JFrame("Demo"); DefaultMutableTreeNode node = new DefaultMutableTreeNode("Products"); DefaultMutableTreeNode node1 = new DefaultMutableTreeNode("Clothing (Product1 - P66778)"); DefaultMutableTreeNode node2 = new DefaultMutableTreeNode("Accessories (Product2 - P66779)"); ...
Read MoreWhen should we write our own assignment operator in C++?
Here we will see when we need to create own assignment operator in C++. If a class do not have any pointers, then we do not need to create assignment operator and copy constructor. C++ compiler creates copy constructor and assignment operator for each class. If the operators are not sufficient, then we have to create our own assignment operator.Example Live Demo#include using namespace std; class MyClass { //no user defined assignment operator or copy constructor is present int *ptr; public: MyClass (int x = 0) { ptr = new int(x); } void setValue (int x) { *ptr = x; } void print() { cout
Read More8086 program to determine modulus of first array elements corresponding to another array elements\\n
In this program we will see how to perform modulus of the first array corresponding to the next array.Problem StatementWrite 8086 Assembly language program perform modulus of the first array corresponding to the next array.DiscussionIn this example there are two different arrays. The arrays are stored at location 501 onwards and 601 onwards. The size of these two arrays are stored at offset location 500. We are taking the array size to initialize the counter, then by using loops we are getting the modulus of the elements one by oneInputAddressData……500045010F5020B5030550408……601046020A6030260403……Flow DiagramProgram MOV SI, 500 ;Point Source index ...
Read MoreFind in a dictionary like structure by value with MongoDB?
You can use find() for this. Let us first create a collection with documents −> db.findInDictionaryDemo.insertOne( ... { ... "_id":101, ... "AllCustomerDetails": ... { ... "SomeCustomerDetail1": ... { ... "CustomerName1":"John Doe", ... "CustomerName2":"John Smith" ... }, ... "SomeCustomerDetail2": ... { ... "CustomerName1":"Carol Taylor", ... "CustomerName2":"David Miller" ...
Read MoreHow to print document value in MongoDB shell?
For this, work with the concept of forEach(). Let us first create a collection with documents −> db.printDocuementValueDemo.insertOne({"InstructorName":"John Smith"}); { "acknowledged" : true, "insertedId" : ObjectId("5cd6804f7924bb85b3f48950") } > db.printDocuementValueDemo.insertOne({"InstructorName":"Sam Williams"}); { "acknowledged" : true, "insertedId" : ObjectId("5cd680577924bb85b3f48951") } > db.printDocuementValueDemo.insertOne({"InstructorName":"David Miller"}); { "acknowledged" : true, "insertedId" : ObjectId("5cd680637924bb85b3f48952") }Following is the query to display all documents from a collection with the help of find() method −> db.printDocuementValueDemo.find().pretty();This will produce the following output −{ "_id" : ObjectId("5cd6804f7924bb85b3f48950"), "InstructorName" : "John Smith" } { "_id" : ObjectId("5cd680577924bb85b3f48951"), "InstructorName" : "Sam Williams" } ...
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