Controlling Precision and Rounding Behavior
Controlling precision and rounding behavior is often necessary when working with floating-point numbers. Explicit type casting allows programmers to precisely control these aspects. Here’s how you can achieve precision control and rounding behavior:
#include <iomanip>
#include <iostream>
using namespace std;
int main()
{
double x = 10.56789;
// Multiply by 100 to keep two decimal places, then cast
// to int
int y = static_cast<int>(x * 100);
// Convert back to double with two decimal places
double rounded_x = y / 100.0;
// Set precision to 2 decimal places
cout << setprecision(2) << fixed;
cout << "x: " << x << ", rounded_x: " << rounded_x
<< endl;
return 0;
}
#include <stdio.h>
int main()
{
double x = 10.56789;
// Multiply by 100 to keep two
// decimal places, then cast to int
int y = (int)(x * 100);
// Convert back to double
// with two decimal places
double rounded_x = y / 100.0;
printf("x: %lf, rounded_x: %lf\n", x, rounded_x);
return 0;
}
public class Main {
public static void main(String[] args)
{
double x = 10.56789;
// Multiply by 100 to keep two decimal places, then
// cast to int
int y = (int)(x * 100);
// Convert back to double with two decimal places
double rounded_x = y / 100.0;
System.out.println("x: " + x
+ ", rounded_x: " + rounded_x);
}
}
using System;
class Program {
static void Main()
{
double x = 10.56789;
// Multiply by 100 to keep two decimal places, then
// cast to int
int y = (int)(x * 100);
// Convert back to double with two decimal places
double rounded_x = y / 100.0;
Console.WriteLine("x: " + x
+ ", rounded_x: " + rounded_x);
}
}
x = 10.56789
y = int(x * 100) # Multiply by 100 to keep two decimal places, then cast to int
rounded_x = y / 100.0 # Convert back to float with two decimal places
print("x:", x, ", rounded_x:", rounded_x)
Output
x: 10.57, rounded_x: 10.56
Explicit Type Casting
In programming, Data Types play a crucial role in defining the behavior and characteristics of variables. However, situations often arise where we need to convert data from one type to another. This process is known as Type Casting or Type Conversion. In this blog, we’ll understand Explicit Type Casting, exploring its applications, advantages, pitfalls, and best practices.
Table of Content
- What is Explicit Type Casting?
- When to Use Explicit Type Casting?
- Examples of Explicit Type Casting
- Explicit Type Casting of Incompatible Data Types
- Controlling precision and rounding behavior
- Advantages of Explicit Type Casting
- Disadvantages of Explicit Type Casting
- Explicit Type Casting Common Mistake
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