Compare two numbers using compareTo method in Dart :
In this dart tutorial, we will learn how to compare two numbers using compareTo methods. We know that numbers in dart can be categorized into two types: integer and doubles. Dart has one inbuilt method compareTo to compare two different integer or double variables. We can define this method as below :
int compareTo (
num other
)
- It takes one number variable as argument.
- The return value is 0 if both numbers are equal, a negative number if the current number is less than the number passing as an argument and a positive number if the current number is greater than the argument number.
One thing we should remember that -0.0 is less than 0.0. Let’s try to implement this with an example :
import 'dart:io';
main(){
stdout.writeln("Enter first number : ");
double firstNumber = stdin.readLineSync();
stdout.writeln("Enter second number : ");
double secondNumber = stdin.readLineSync();
if(firstNumber.compareTo(secondNumber) == 0){
stdout.writeln("$firstNumber is equal to $secondNumber");
}else if(firstNumber.compareTo(secondNumber) < 0){
stdout.writeln("$firstNumber is smaller than $secondNumber");
}else{
stdout.writeln("$firstNumber is greater than $secondNumber");
}
}
Sample Output :
Enter first number :
5
Enter second number :
2
5 is greater than 2
Enter first number :
3
Enter second number :
3
3 is equal to 3
Enter first number :
3
Enter second number :
4
3 is smaller than 4
