Question

Which is true about the following statement?

cout << setw(4) << num4 << " ";

A) It allows four spaces for the value in the variable num4.
B) It outputs "setw(4)" before the value in the variable num4.
C) It should use setw(10) to output the value in the variable num10.
D) It inputs up to four characters stored in the variable num4.
E) None of these

Answer 1

In C++, the statement cout << setw(4) << num4 << " " is used for outputting a value with a specific width. The statement cout << setw(4) sets the width of the output to four spaces. None of the given options are correct.

Step-by-step explanation:

In C++, the statement cout << setw(4) << num4 << " " is used for outputting a value with a specific width.

A) The statement cout << setw(4) sets the width of the output to four spaces.

B) The statement cout << setw(4) is not outputted itself; it just sets the width before the value in num4.

C) setw(10) would set the width to ten spaces, not necessary for outputting num10.

D) The statement cout << setw(4) does not input any characters from num4; it only outputs the value with the specified width.

E) None of these options are correct.