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- Question
Warning implicit declaration of function?
- Correct Answer
- Function: A Function is a block of statement which perform some operation Declaring the function before using the function in program is known as implicit declaration of the function For Example:: int bar(void); // function (forward) declaration int main(void) { bar(); // bar was declared, the compiler has all the info return foo(123); // foo not yet known; impl decl warning } // not previously declared function definition int foo(int a) { return a; } // previously declared function definition int bar() { return 321; }
- 1. Is it possible to nest functions in javascript? Discuss
- 2. Which of the following best describes JavaScript?
Options- A. a scripting language precompiled in the browser.
- B. an object-oriented scripting language
- C. a low-level programming language.
- D. a compiled scripting language. Discuss
- 3. Which is a reserved word in the java programming language?
Options- A. Variable
- B. Identifier
- C. Keyword
- D. Main Discuss
- 4. How do you handle error condition while writing stored procedure or accessing stored procedure from java ? Discuss
- 5. What is the difference between creating String as new() and literal ? Discuss
- 6. How many constructors can a class have?
Options- A. 1
- B. 2
- C. 4
- D. None of the above Discuss
- 7. What compilers apple using ? Discuss
- 8. What are the different layers of cloud computing? Discuss
- 9. How does cloud computing provides on-demand functionality? Discuss
- 10. What is the use of API?s in cloud services? Discuss
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Correct Answer: Yes, it is possible to nest functions in javascript
Correct Answer: an object-oriented scripting language
Explanation:
JavaScript, often abbreviated as JS, is a high-level, interpreted programming language that conforms to the ECMAScript specification.
JavaScript has
* curly-bracket syntax,
* dynamic typing,
* prototype-based object-orientation, and
* first-class functions.
Uses :
It is well-known as the scripting language for Web pages, many non-browser environments also use it, such as Node.js, Apache CouchDB and Adobe Acrobat.
Correct Answer: Keyword
Explanation:
Reserved words are words that cannot be used as object or variable names in a Java program because they're already used by the syntax of the Java programming language.
Java reserved words are keywords that are reserved by Java functions or other uses that cannot be used as identifiers (e.g., variable names, function names, class names).
If a reserved word was used as a variable you would get an error or unexpected result.
Examples : Int, Long, Abstract, Class, Break, Catch, Case, Public, Static, Void,...
Correct Answer: Stored procedure should return error code if some operation fails but if stored procedure itself fail than catching SQLException is only choice
Correct Answer: When we create string with new() Operator, it?s created in heap and not added into string pool while String created using literal are created in String pool itself which exists in PermGen area of heap String s = new String("Test"); does not put the object in String pool , we need to call Stringintern() method which is used to put them into String pool explicitly its only when you create String object as String literal eg String s = "Test" Java automatically put that into String pool
Correct Answer: None of the above
Explanation:
A class can have any number of constructors. If a class have more than one constructor, we call it as the constructor is overloaded.
Correct Answer: The Apple compilers are based on the compilers of the GNU Compiler Collection
Correct Answer: Cloud computing consists of 3 layers in the hierarchy and these are as follows: 1 Infrastructure as a Service (IaaS) provides cloud infrastructure in terms of hardware like memory, processor speed etc 2 Platform as a Service (PaaS) provides cloud application platform for the developers 3 Software as a Service (SaaS) provides cloud applications which are used by the user directly without installing anything on the system The application remains on the cloud and it can be saved and edited in there only
Correct Answer: Cloud computing is a metaphor used for internet It provides on-demand access to virtualized IT resources that can be shared by others or subscribed by you It provides an easy way to provide configurable resources by taking it from a shared pool The pool consists of networks, servers, storage, applications and services
Correct Answer: API stands for Application programming interface is very useful in cloud platforms as it allows easy implementation of it on the system It removes the need to write full fledged programs It provides the instructions to make the communication between one or more applications It also allows easy to create application with ease and link the cloud services with other systems
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