Scope of Variables - Local vs Global

Programming & Data Structures: Scope of Variables in C programming.
Topics discussed:
1. What is the scope of a variable?
2. Local variable.
3. Example of local variable.
4. Global variable.
5. Example of global variable.
C Programming Lectures: goo.gl/7Eh2SS
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[@jarjarbinks9937]

at 6:25 the two variables in the second case have different addresses so that actually makes it two different memory locations. However in the first case can it not be interpreted as changing the variable rather than it's redefinition because when applying a loop, and over multiple iterations the value of the variable might be changing but that isn't interpreted as the redefinition of the function.

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[@AbdulkerimJemal-tc6mn]

The example mentioned in the video says that we cannot enter another var that will make an error but as we learned in itialization of variable that we can change the var and am a little bit confused with it can u explain for Please ????

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? I used to know that a program is executed from the main function. Then how is the variable created before the start of execution of main function?

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Sir why the function fun() doesn't print the global variable if we don't call the fun in the local variable??

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Is it enough for placements ?

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Can anyone explain me last example? int var = 3; is inside int fun(),so how it is called global variable?

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[@natureandtech09]

Sir you said that if we trying to acess a variable in internal block we can access the contents of outer block also so sir in output question 5:20 why the internal block print 4 as a output as we can see it.can access outerblock var and gives erorr due to redifinition of var because internal block can access outer block information plz explain sir

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you told that main function is the starting part of the program and there's another function fun?? please explain

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Where did i find these notes?

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When we have to use %d ,and only %d.we are giving here two integers right then what is the difference

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Sir,, What is the lifetime of a dynamically created variable???

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Bhaiya pehle global variable print hoga ya bracket ke andar wala??

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[@zakirahimi7924]

the scope of a variable is not its lifetime. scope is the accessibility or visibility of a variable to other parts of a program. lifetime is the time between the creation of a variable and death of the variable, so a variable may be alive in the program but not accessible. (keep up the great work, your content is very very structured.)

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i am getting an error which says '1d returned exit status'

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scope != lifetime just look at static local variable, scope : function lifetime : program runtime

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How to access the global variable in a function which has a variable of the same name as the global variable

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Where is the lec pdf? Anyone?

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Is it enough for placements ?

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can we get pdf or written notes

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What's the difference between %d/n and only %d

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At 10:52..why do we need to call that function [ fun()] in int main function

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so why we are calling the function fun() in int main function is that because the function fun() outside the int main function gets executed..Thats why it prints output 10 in fun()

[@stephen9673]

My output was 4 and 4, not 4 and 3. Any explanation of why?

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%d is nothing but storage of variable and is used to print value in next line

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Is it ok to write like this? int main() { I wonder, because you write it this way: int main() {

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Is it enough for placements ?