In the Dart programming language, an integer is represented by the `int` keyword. As we may know, integers include whole numbers (i.e., non-decimal positive and negative numbers). For every integer, four bytes are allocated in the memory.

import 'dart:convert';
void main() {
    // Two integers
    int num1 = 6;// positive number
    int num2 = -6;// negative number
    // printing both numbers
    print(num1);
    print(num2);
}

The code below throws an error because it is not possible to assign a fractional value to an integer.

> For fractional values, we use `double` datatype.

import 'dart:convert';
void main() {
    // Two integers
    int num = 6.56;// fractional value
    // printing both numbers
    print(num);
}

Integer in Dart

In Dart, integers use the int keyword for whole numbers, occupying four bytes in memory. Fractional values require the double datatype.

Integer in Dart

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