c++ cout format specifier for correct number of decimal points

Format Specifier for Correct Number of Decimal Points in C++

In C++, you can use the std::fixed and std::setprecision manipulators to set the number of decimal points when using the std::cout stream.

• Step 1: Include the necessary header file. cpp #include <iostream> #include <iomanip>

• Step 2: Set the number of decimal points using std::fixed and std::setprecision. cpp double number = 123.456789; std::cout << std::fixed << std::setprecision(2) << number << std::endl;

• Explanation:

• std::fixed sets the floating-point output format to fixed notation.

• std::setprecision(2) sets the precision to 2 decimal places.

• Example Output:cpp 123.46

By following these steps, you can control the number of decimal points when using std::cout in C++.