how to print a float value in c++ code example

Example 1: how to specify how many decimal to print out with std::cout

#include <iostream>
#include <iomanip>

int main()
{
    double d = 122.345;
    std::cout << std::fixed << std::setprecision(2) << d;
}

//result that get print out: 122.34

Example 2: how to make a float in C++

public float whatYourFloatIsCalled = 0;
public float whatIsYourFloat;