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Assume the following variable definition appears in a program: double number = 12.0; Write a cout statement that uses the setprecision manipulator and the showpoint manipulator to display the number variable with 8 significant digits, padded with trailing zeroes. (Assume that the program includes the necessary header file for the manipulators.)

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Answer:

The answer with explanation and output result is provided below.

Explanation:

setprecision(n) manipulator controls the number of places after the decimal point. setprecision(8) will display 8 significant digits, padded with trailing zeroes.

fixed manipulator sets the output in a fixed decimal format.

showpoint manipulator makes sure the display of a decimal point.

setprecision(n) and fixed manipulator should be used together otherwise it might not show the trailing zeroes.

Code:

#include <iostream>

#include <iomanip>

using namespace std;

int main()

{

  double number=12.0;

  cout<<fixed<<showpoint<<setprecision(8)<<number<<endl;

   return 0;

}

Output:

12.00000000

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