how to achieve c++ phone number format : [phone]? - c++

Question

#include <iostream>
#include <string>
#include <sstream>
using namespace std;
std::wstring inputfield;
void function(uint32_t val)
{
std::wstring keystring;
keystring = std::to_wstring(val);
inputfield = inputfield + keystring;
std::wstringstream s;
s << L"(" << inputfield << L") ";
std::wstring str = s.str();
std::wcout << str << "\n";
return;
}
int main()
{
uint32_t x ;
while(cin>>x)
{
function(x);
cout<< *(&x)<< endl;
}
return 0;
}
I am trying string format to get output like [phone] or USA phonenumber format, But I am not able to achieve that, Please help, Thanks

Answer 1

If you want to change string 000000000 or simillar (and you do, even if input is a number, simply convert it with std::to_string) then just add a few characters in proper places.
std::string format_number(std::string str) {
if(str.size() != 9) {
throw std::logic_error{"Phone number is not 9-characters long"};
}
str.insert(str.begin(), '(');
str.insert(str.begin() + 4, ')');
str.insert(str.begin() + 5, '-');
str.insert(str.begin() + 9, '-');
return str;
}

Answer 2

You can allocate input phone numbers and then pass structures like this;
struct numbers {
int A;
int B;
int C;
} // then get (A)-B-C

Answer 3

#include <iostream>
#include <thread>
#include <string>
//---- The following function will be invoked by the thread library
void thread_proc(std::string msg)
{
std::cout << "ThreadProc msg:" << msg;
}
int main()
{
// creates a new thread and execute thread_proc on it.
std::thread t(thread_proc, "Hello World\n");
// Waiting for the thread_proc to complete its execution
// before exiting from the program
t.join();
}
How to resolve this error
$ g++ Dummy.cpp -o Dummy -std=c++1z -pthread
Dummy.cpp: In function 'int main()':
Dummy.cpp:12:10: error: 'thread' is not a member of 'std'
12 | std::thread t(thread_proc, "Hello World\n");
| ^~~~~~
Dummy.cpp:3:1: note: 'std::thread' is defined in header '<thread>'; did you forget to '#include <thread>'?
2 | #include <thread>
+++ |+#include <thread>
3 | #include <string>
Dummy.cpp:15:5: error: 't' was not declared in this scope; did you mean 'tm'?
15 | t.join();
| ^
| tm