cout Questions
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I decided to try Visual Studio 2012 Express today. First thing to do was to write "Hello world!" application, however, I couldn't make it work. I created a Windows console application project, wrot...
3
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I have seen people output different strings together by using both "<<" and "+".
cout << firstname << lastname << endl;
versus:
cout << firstname + lastname <&l...
1
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The cout statement in this for loop:
for (vector<Student>::iterator qw = students.begin(); qw != students.end(); ++qw){
Student a = *qw;
name = a.getName();
regno = a.getRegNo();
std::c...
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Possible Duplicate:
Convert a double to fixed decimal point in C++
Suppose , I have double a = 0 and I want to print it as 0.0000 .
I've tried this :
cout.precision(4) ;
cout<&...
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I can't realize how could it be possible to print a string this way without any complaint by the compiler:
std::cout << "Hello " "World!";
In fact, the above line works exactly like:
std:...
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As in this question is said, there is some differences between negative and positive zero in floating point numbers. I know it's because of some important reasons. what I want to know is a short co...
Chrono asked 21/9, 2012 at 18:35
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I have a program where I use cout to emit debug information. The code is executed in the initialization of a static global variable, i.e. quite early in the program execution. When I use my own bui...
Cannibal asked 7/9, 2012 at 13:3
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I am getting an error when I try to output the return value from one of my methods:
Error: No operator "<<" matches these operands. Operand types are: std::ostream << std::string
Mai...
2
When I construct a boost::options_description instance like
options.add_options()
("double_val", value(&config.my_double)->default_value(0.2), "it's a double");
and later want to have th...
Tandi asked 14/11, 2009 at 17:22
2
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Every time I send a char to the cout object, it displays in ASCII characters unless I cast it to an int.
Q: Is there a way to display the numerical value of a char without an explicit cast?
I rea...
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I want to provide a tab-like capability for C++ text output streams. The feature should allow me to say "note this position", then allow multiple insert operations, and finally allow me to say "add...
3
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I am curious if std::cout has a return value, because when I do this:
cout << cout << "";
some hexa code is printed. What's the meaning of this printed value?
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3
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I want to see source code of STL std::cout function. I looked at iostream, but I've seen only "extern cout". So, I guess that it's defined somewhere in the library.
I downloaded source code from o...
2
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In C++, when I am using std::cout like that:
std::cout << "myString" << std::endl;
Is there anything that will be allocated on the heap by std::cout? Or will std::cout do everything ...
Cheder asked 23/4, 2012 at 17:41
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My computer science professor wants us to find the declaration of cout. I've compiled a simple Hello world program using g++ and the -E parameter. Here's what my hello.cpp looks like:
#include <...
Brunhilde asked 11/3, 2012 at 4:14
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I'm working with some multithreaded code for a game project, and got a bit tired of sorting through the stdout vomit created by two threads using cout for debuging messages at the same time. I did ...
Cesura asked 2/3, 2012 at 2:21
4
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Possible Duplicate:
How to stop C++ console application from exiting immediately?
I am trying to see my results, what do I do to my code so I can see if what I did is correct?
#inclu...
2
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Possible Duplicate:
Unexpected order of evaluation (compiler bug?)
I couldn't predict the output for this program :
#include<iostream>
using namespace std;
int *p(int *a)
{
(...
Candent asked 2/1, 2012 at 19:12
4
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I'd like implement class MyCout, which can provide possibility of automatic endl, i.e. this code
MyCout mycout;
mycout<<1<<2<<3;
outputs
123
//empty line here
Is it possibl...
3
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Issue
I'm getting no output from a simple cout, whereas a printf will always print the number:
std::cout << variableuint8; // prints nothing
printf("%u", variableuint8); // prints the numbe...
3
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How can I print a character N number of times using std::cout without looping?
Is there a way to move the text cursor back to nullify the effect of std::cout << std::endl;? i.e. to move up a...
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Does anybody know if there is a trick to toggle all the cout << functions to not print out visible output? I am trying to hack together some code written by me and some other people to put to...
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I have something like:
int8_t value;
value = -27;
std::cout << value << std::endl;
When I run my program I get a wrong random value of <E5> outputted to the screen, but when I...
1
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I need my program to behave differently, depending on whether the output is to a terminal or to a file. How can I find this out from within C++?
I assume there is no solution that works for all op...
Asphyxiant asked 25/9, 2011 at 21:56
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