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Reagan Y.
Teachers Assistant At Stony Brook University
Tutor Satisfaction Guarantee
Python Programming
TutorMe
Question:

What is Python really?

Reagan Y.
Answer:

Python is an interpreted language. That means that, unlike languages like C and its variants, Python does not need to be compiled before it is run. Other interpreted languages include PHP and Ruby. Python is dynamically typed, this means that you don't need to state the types of variables when you declare them or anything like that. You can do things like x=111 and then x="I'm a string" without error

Java Programming
TutorMe
Question:

Why does Java not support operator overloading ?

Reagan Y.
Answer:

Unlike C++, Java doesn't support operator overloading. Java doesn't provide freedom to programmer, to overload the standard arithmetic operators e.g. +, -, * and / etc.

C Programming
TutorMe
Question:

Can you write two functions in which one executes before main function and other executes after the main function?

Reagan Y.
Answer:

Syntax: #pragma startup [priority] #pragma exit [priority] Where, priority is optional integer value. For user priority varies from 64 to 255 For c libraries priority varies from 0 to 63 Default priority is 100. pragma startup always execute the function before the main function pragma exit always execute the function after the main function. Function declaration of must be before startup and exit pragma directives and function must not take any argument and return void. If more than one startup directive then priority decides which one will execute first. startup: Lower value: higher priority i.e. functions will execute first. If more than one exit directive then priority decides which one will execute first. exit: Higher value: higher priority i.e. functions will execute first. For example #include<stdio.h> void india(); void usa() ; #pragma startup india 105 #pragma startup usa #pragma exit usa #pragma exit india 105 int main(){ printf("\nI am in main"); return 0; } void india(){ printf("\nI am in india"); } void usa(){ printf("\nI am in usa"); } Output: I am in usa I am in India I am in main I am in India I am in usa Explanation: Above program there are two startup directives which will execute before the main function. Function name India has priority 105 Function name usa has priority 100 (default) So usa function will execute first than India function and above program there are two exit directive which will execute after the main function. Function name India has priority 105 Function name usa has priority 100 (default) So india function will execute first than usa function.

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