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Questions - iostream

Does swap() function works in iostream header?

#include <iostream> using namespace std; int main(){ swap(a[i],a[j]) } In this the swap function work automatically or I need to create a another swap function to solve this?
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Rio_t

c++

arrays

function

iostream

swap

Votes: 0

Answers: 1

Latest Answer

swap is not a keyword in C++ but rather a function from the C++ standard library. So to use it you need to bring in the function from the appropriate C++ standard library header. Unfortunately std::sw...
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Bathsheba

C++ Checking if a string that is representing a date is 7 or more days before today date

I have a date stored as a string with the format %d.%m.%y, for example, "08.01.2022" and I want to check if at least 7 days have past since that day in C++. I attempted using this method: #...
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Mikey

c++

datetime

time

iostream

time.h

Votes: 0

Answers: 1

Latest Answer

This answer doesn't actually attack your problem but offers an alternative solution using std::chrono (which would require C++20, and I think MSVC compiler for from_stream): #include <chrono> #i...
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rturrado

std::cin , unwanted behaviour. and how can I fix this?

I tried to play with some code to test overloading functions. The overloading part went well, however, I learned something about std::cin that made me feel stupid for not noticing it before! #include ...
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med amine riahi

c++

iostream

cin

istream

Votes: 0

Answers: 1

Latest Answer

This is not a strange behaviour what really happens is when this line is executed in the read int function: std::cin>>*var; it expects an integer from your keyboard buffer and when you enter t...
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Bemwa Malak

std::osyncstream outputs garbled text and causes seg fault

This code when using osyncstream outputs garbage characters, isn't alway in sync, and seg faults. When output is to std::cout directly the output isn't in sync but output is good and does not seg faul...
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rm1948

c++

stl

c++20

iostream

Votes: 0

Answers: 1

Latest Answer

That's not how osyncstream is supposed to be used. Every thread needs to construct its own osyncstream; there is no synchronization on access to the osyncstream itself. Only the transfer performed by ...
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T.C.

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