how print fload wiht 2 decimal in c++

To print a float with two decimal places in C++, you can make use of the std::setprecision manipulator from the <iomanip> header. Here are the steps to achieve this:

1. Include the <iostream> and <iomanip> headers in your code to use the necessary input/output and manipulator functions:

#include <iostream>
#include <iomanip>

1. Declare a float variable and assign it the desired value:

float number = 3.14159;

1. Use the std::fixed and std::setprecision manipulators to format the float with two decimal places. The std::fixed manipulator ensures that the number is printed in fixed-point notation:

std::cout << std::fixed << std::setprecision(2) << number << std::endl;

1. Run the code, and the float value will be printed with two decimal places:

3.14

Here's the complete code example:

#include <iostream>
#include <iomanip>

int main() {
    float number = 3.14159;
    std::cout << std::fixed << std::setprecision(2) << number << std::endl;

    return 0;
}

This code will output 3.14, which is the float value 3.14159 rounded to two decimal places.