size_t In C And C++

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5 жыл бұрын

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In this video we will learn about the "size_t" data type in C/C++ programming language.
POINTS:
1. It is used to represent size of objects/variables in bytes.
2. sizeof returns this data type only.
3. It guarantee to be big enough to contain the size of the biggest object that system can handle.
a. If compiler is 32 bit: IT IS typedef of unsigned int
b. If compiler is 64 bit: IT IS typedef of unsigned long long.
4. It is never negative.
5. Standard functions use this type for count/number.
a. malloc (size_t)
b. memcpy (destination, source, size_t)
c. size_t strlen (const char*)
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Пікірлер: 34

@umndrk600 14 күн бұрын

Thankyou so much for explain size_t.

@satyamkumaarr 28 күн бұрын

most under-rated one......!!

@abhinavrawal6968 2 жыл бұрын

Finally someone who clears it! Thanks a lot!

@ganeshkumar269 4 жыл бұрын

new favourite channel. Great Videos!

@CppNuts 4 жыл бұрын

Thanks man!!

@amineahardane999 5 жыл бұрын

what does it mean "big enough" ? size_t choose the type in base of your operations? or just the biggest size of the system? and if i must rappresent for example, n>0 && n

@ashwinalagiri-rajan1180 2 жыл бұрын

by big enough I think he means that the size of the integer that you create with size_t matches the size of architecture of your os. 64 bit -> 64 bit int 32 -> 32bit int

@benbenson8967 4 жыл бұрын

SUPER helpful thank you!

@CppNuts 4 жыл бұрын

Glad it helped.

@MindFlowBYT 3 жыл бұрын

That is one great video but could you explain to me what is the difference between size_t and unsigned long long in 64bit for example? Because I do not understand why should I use size_t instead of unsigned type.

@Stormrage699 2 жыл бұрын

Portability

@raghavjuyalcomedydancedeew636 2 жыл бұрын

Thank you sir for clearing my annoying doubt.

@CppNuts 2 жыл бұрын

You are welcome..

@aninexclusive466 4 жыл бұрын

You're an amaizing teacher.

@CppNuts 4 жыл бұрын

Thanks man!!

@clinitajoy5709 4 жыл бұрын

Thnk you so much🥰

@CppNuts 4 жыл бұрын

You’re welcome 😊

@yutaitadori7318 3 жыл бұрын

U r loyal to your viewers 👏

@CppNuts 3 жыл бұрын

I try

@himanshurajpal7842 3 жыл бұрын

Have u any other social media platform , I wanna join. Brother'!! You are very great❤️

@CppNuts 3 жыл бұрын

Check description.. Or check channel page for linkedin.

@cid007007 4 жыл бұрын

#include using namespace std; void print(size_t count) { while(count++) { cout

@CppNuts 4 жыл бұрын

It wont give any warning, it will just go to reverse. meaning for example suppose if size_t supports number from 0 to 100 and you said -1 it will print 100 and if you say -2 it will print 99. So it goes in reverse. Please do this experiment with char, because it is smaller and you can get the realisation quickly. Example: unsigned char c = -1; cout