The showpoint() method of stream manipulators in C++ is used to set the showpoint format flag for the specified str stream. This flag always displays the floating point values along with their decimal values.
Syntax:
ios_base& showpoint (ios_base& str)
Parameters: This method accepts str as a parameter which is the stream for which the format flag is affected.
Return Value: This method returns the stream str with showpoint format flag set.
Example 1:
// C++ code to demonstrate // the working of showpoint() function #include <iostream> using namespace std;
int main()
{ // Initializing the floating values
double n1 = 10;
double n2 = 20.0;
cout.precision(5);
// Using showpoint()
cout << "showpoint flag: "
<< showpoint
<< n1 << endl
<< n2 << endl;
return 0;
} |
Output:
showpoint flag: 10.000 20.000
Example 2:
// C++ code to demonstrate // the working of showpoint() function #include <iostream> using namespace std;
int main()
{ // Initializing the floating values
double n3 = 30.1223;
cout.precision(5);
// Using showpoint()
cout << "showpoint flag: "
<< showpoint
<< n3 << endl;
return 0;
} |
Output:
showpoint flag: 30.122
Reference: http://www.cplusplus.com/reference/ios/showpoint/