streamsize precision() const; | (1) | |
streamsize precision( streamsize new_precision ); | (2) |
Manages the precision (i.e. how many digits are generated) of certain numeric output conversions.
1) Returns the current precision.
2) Sets the precision to the given one.
Parameters
new_precision | - | new precision setting |
Return value
the precision before the call to the function.
Example
#include <iostream> int main() { const double d = 1.2345678901234; std::cout << "The default precision is " << std::cout.precision() << "\n\n"; std::cout << "With default precision d is " << d << '\n'; std::cout.precision(12); std::cout << "With high precision d is " << d << '\n'; }
Output:
The default precision is 6 With default precision d is 1.23457 With high precision d is 1.23456789012
See also
manages field width (public member function) |
Please login to continue.