Writing Your Own Stream Manipulators - C++ File Stream

C++ examples for File Stream:cout

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Description

Writing Your Own Stream Manipulators

Demo Code

#include <iostream>
#include <iomanip>
#include <string>

using namespace std;

// make floating-point output look normal
inline ios_base& floatnormal(ios_base& io) {
   io.setf(0, ios_base::floatfield);//w  w  w . j  a  v  a2  s  .  co  m
   return(io);
}
int main() {

   ios_base::fmtflags flags =  cout.flags();

   double pi = 3.14159265;

   cout << "pi = " << scientific   // Scientific mode
        << pi * 1000 << '\n';

   cout << "pi = " << floatnormal
        << pi << '\n';

   cout.flags(flags);
}

Result


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