cout Questions
1
Solved
I am taking part in a small programming competition online. Basically what I do is solve a task, write an algorithm and send my code to be automatically evaluated by the competition holder's server...
2
Solved
Why isn't it possible to pass std::cout's address as template argument?
Or if it is possible then how?
Here is what I tried:
#include <iostream>
template<std::ostream* stream>
class ...
3
Solved
I wanted to inspect the address of my variable
volatile int clock;
cout << &clock;
But it always says that x is at address 1. Am i doing something wrong??
Yulma asked 23/11, 2011 at 8:44
3
Solved
If I run this code:
std::cout << static_cast<uint8_t>(65);
It will output:
A
Which is the ASCII equivalent of the number 65.
This is because uint8_t is simply defined as:
typed...
Donte asked 25/8, 2016 at 12:47
4
Solved
I have the following cout statement. I use char arrays because I have to pass to vsnprintf to convert variable argument list and store in Msg.
Is there any way we can get cout output to C++ std::s...
2
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Im trying to change the color of some of my cout outputs but after that cout to be again the same color.
Ive tried the following code:
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 4);...
5
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In an effort to better understand buffered streams in C++, I would like to write a simple program in which the std::cout buffer is NOT flushed before termination. Since I have read that std::cout i...
3
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I am attempting to have the cout buffer flush to view a string before I manipulate it. Ive attempted to flush the buffer with calls to both std::flush() and std::cout.flush() but neither actually f...
1
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Given: auto foo = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"s I can convert all the characters to lowercase by:
use_facet<ctype<char>>(cout.getloc()).tolower(data(foo), next(data(foo), foo.size()));...
4
My codes are as simple as these:
#include <iostream>
using namespace std;
//Some codes here...
bool somefunction(){
cout<<"单元格";
return false;
}
and this is what I got:
error C21...
1
The source code is as the following.
cout << '\\' << endl; //OK, output is \
cout << '\\\\' << endl; //OK, output is an integer 23644, but why?
The statement cout <...
Galatea asked 8/4, 2016 at 9:23
8
Solved
I'm trying to simply print out the values contained in an array.
I have an array of strings called 'result'. I don't know exactly how big it is because it was automatically generated.
From what I...
1
I experienced this weird issue recently having to do with cout.setf(ios::fixed). Took me quite a while to track down the cause and thought I'd ask here to learn more.
The issue is this - all float...
3
Solved
I have some code like this:
class Point {
public:
int x,y;
Point() : x(1), y(1) {}
}
Can I print object of that class using printf():
int main()
{
Point point;
printf("%o",point);
return 0...
2
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I have some old C code I'm trying to replicate the behavior of in C++. It uses the printf modifiers: "%06.02f".
I naively thought that iomanip was just as capable, and did:
cout << setfill(...
Alberich asked 14/12, 2015 at 20:0
3
Solved
I came across this rather vague behavior when messing around with code , here's the example :
#include <iostream>
using namespace std;
int print(void);
int main(void)
{
cout << "T...
1
The code is simple
#include <iostream>
#include <unistd.h>
using namespace std;
int main()
{
for(int i = 0; i < 3; ++i)
{
cout << "1 "; cout.flush();
sleep(1);
}
}
whi...
Thalassa asked 29/11, 2014 at 13:4
1
I am writing a program using MPI. Each processor executes a for loop:
int main(int argc, char** argv) {
boost::mpi::environment env(argc, argv);
for( int i=0; i<10; ++i ) {
std::cout <&l...
4
Solved
It's a sort of duplicate of this question. I followed the recommendations (I think) and included that <string> but the exact same error is thrown at my face :
error C2679: binary '<<...
Vedis asked 6/9, 2015 at 18:11
2
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In c++ what is the difference between std::cout and std::wcout?
They both control output to a stream buffer or print stuff to the console, or are they just alike ?
1
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I'm working with some code that uses a global debug logger that is of type std::ofstream*. I would like to redirect this to std::cout since I'm using the code in realtime, as opposed to a batch met...
7
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One can remove all calls to printf() using #define printf. What if I have a lot of debug prints like std::cout << x << endl; ? How can I quickly switch off cout << statements in a...
Waters asked 7/9, 2009 at 13:54
1
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I'm trying to print the Chinese character 中 using the types wchar_t, char16_t and char32_t, without success (live example)
#include <iostream>
int main()
{
char x[] = "中"; // Chinese charac...
5
Solved
In the following example:
cout<<"\n"[a==N];
I have no clue about what the [] option does in cout, but it does not print a newline when the value of a is equal to N.
Indicant asked 17/6, 2015 at 10:26
2
Why "n*n" results as 4 at the first instant of the loop? to me it should be 1*1. instead it comes as 2*2.
Please give me a simple answer as i'm still a beginner :)
#include <iostream&g...
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