This question already has answers here:
How do I get crtdbg.h file?
(8 answers)
Closed 2 years ago.
When i start my code i get 'the system cannot find the file specified' error. What's wrong?
#include <iostream>
using namespace std;
int main() {
cout << "Hello world";
return 0;
}
https://i.stack.imgur.com/QoY3I.png <--- Here is my problem
Your executable did not build. If you look in the console output you have an error: cannot include crtdbg.h. This is the error you have to fix.
This might help: How do I get crtdbg.h file?
Related
This question already has answers here:
Function call missing argument list warning
(2 answers)
Closed 2 years ago.
I'm learning C++ online and working with Visual Studio Community 2019 (version 16.7.2). Sometimes it displays errors or weird results despite using the exact same code as the one the tutor used. Take the code below for instance. It should print out to the console but it doesn't. Instead, it shows an empty console when I run it on my end. What could be the problem? The teacher is also using Visual Studio on a Windows machine.
#include <iostream>
using namespace std;
void printSomething();
int main()
{
printSomething;
return 0;
}
void printSomething()
{
cout << "Hey! Over here." << endl;
}
Because you are only "mentioning" it here printSomething;.
To actually call it try the appropriate operator () as in printSomething();.
This question already has answers here:
c++: subprocess output to stdin
(2 answers)
popen equivalent in c++
(3 answers)
Closed 6 years ago.
Is there an easy way to get output of system commands into a string in C++?
Heres and example of what I mean, trying to get the epoch into a string.
It doesnt work of course.
#include <stdlib.h>
#include <iostream>
#include <string.h>
using namespace std;
int main(){
string t = system("date +%s");
cout << "Time " << t << endl;
return 0;
}
For that specific task you probably want to use time and ctime (or something similar).
For the more general case, see popen (or, on Microsoft compilers, _popen). This doesn't return a string directly; it returns a FILE *, which you can then read like you would a file.
This question already has answers here:
how does url within function body get compiled
(2 answers)
Closed 6 years ago.
Any anyone explain why I can put URIs in C++ source code?
#include <iostream>
int main() {
using namespace std;
http://www.google.com
int x = 5;
cout << x;
}
This seems strange to me?
For example Visual Studio 2015 gives me a warning: warning C4102: 'http': unreferenced label
but the code compiles!
The compiler sees http: as a label, and //www.google.com as a comment.
This question already has answers here:
Where to get iostream.h
(3 answers)
Closed 7 years ago.
As am learning cpp tutorial
#include <iostream.h>
using namespace std;
int main()
{
//variable declaration
int a,b;
int c;
//actual initialization
a=10;b=20;
c=a+b;
cout<<c;
return 0;
}
my error
fatal error: iostream.h
Just change <iostream.h> to <iostream>
Reason is that .h header extensions were used for C includes but aren't used for C++ anymore.
In fact, you can actually use C libraries with .h it's just there isn't one for iostream since its C++ exclusive, hence the fatal error.
This question already has answers here:
main.cc:5:30: fatal error: folder/file.h: No such file or directory
(3 answers)
Closed 9 months ago.
I began learning MinGW to compile C++ program. I had a sample C++ file including test.cpp (main program) and srfft.h (extra header file I added, not from the libray). The process executed as below step:
g++ test.cpp -o test.exe
test.exe
#include <iostream>
using namespace std;
int main()
{
cout<< "Hello World!\n";
return 0;
}
I got the correct answer, but when I added #include in the C++ code as below:
#include <iostream>
#include <srfft.h>
using namespace std;
int main()
{
cout<< "Hello World!\n";
return 0;
}
CMD showed me" fatal error: srfft.h:No such file or directory"
How do I execute my code with MinGW?
Where is the problem?
Try
#include "srfft.h"
Notice "" instead of < and >. With "srfft.h", the file is searched relative to the current directory, whereas with <srfft.h> the search only takes place in the system and specified include directories, which normally doesn't include the current directory.