CODEWITHSUNDEEP
c++functioniomanip
Amro
Amro

Reputation: 11

fixed,setprecision functions

why setprecision and fixed and other iomanip functions called by using cout not like the string functions for example name.find('') plz help

Upvotes: 1

Views: 98

Answers (1)

Chad
Chad

Reputation: 19052

They allow you to chain the operations in the manner:

cout << setprecision(3) << 1.234 << setprecision(4) << 3.45678;

In fact, there are functions to do that, but using them directly breaks this "streaming" capability:

cout.precision(3);
cout << 1.234;
cout.precision(4);
cout << 3.45678;

See: https://en.cppreference.com/w/cpp/io/manip/setprecision vs https://en.cppreference.com/w/cpp/io/ios_base/precision

Upvotes: 1

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