C++ questions

Question 45 In order to use the manipulator setw the program must include the header file istreamwidth osetw iomanipp None of these. iocolumns Question 51 The header file fstream contains the definitions of the data types ifstream and ofstream istream and ostream fistream and fostreanm None of these. findata and foutdata Question 2 A sequence of characters from the source to the destination: stream variable common output data type output stream None of these. Question S To use cin and cout a C++ program must use the preprocessor directive stream on string include Question 31 The statement cin.ignore(100, 'A); results in ignoring the character A" for the first 100 times. the first 100 characters. the integer 100 until after the first input of the character 'A the 100 characters that follow the character A None of these. Question 17 Entering a char value into a variable of type int or double will the variable to accept the char value serious errors called input failure the decimal point to be discarded None of these cause serious errors called pseudo der encounter