fill_n « STL Algorithms Modifying sequence operations « C++ Tutorial

24.2.1.Use the fill_n algorithms: Fill 3 more positions with Y's
24.2.2.Use std::fill_n to fill the first five elements of chars with 'A'
24.2.3.Use fill_n function to insert 'hello' nine times
24.2.4.Use fill_n function to replace all but two elements with 'hi'
24.2.5.Use fill_n to Fill the three elements starting at offset position 3 with value -9