Kursinnehåll

Introduction to Dart

1. First Acquaintance with Dart

Dart Overview Your First Dart Application Function print() in Dart Dart Comments Basic Math Operations

2. Variables and Data Types in Dart

Data Types in Dart Variables in Dart Properties of Numbers in Dart String in Dart Bool, Equality and Relational Operators in Dart List in Dart Indexes in Dart

3. Conditional Statements

if Statement in Dart if...else Statement in Dart else-if Statement in Dart switch-case Statement in Dart

4. Loops in Dart

Introduction to Loops while Loop in Dart do while Loop in Dart For-Loop in Dart Increment and Decrement break and continue

Basic Math Operations

Numbers

You already know how to use the print() function. We used to output text, but what about numbers and mathematical calculations?

Remember to use print() if you want to display your data. Also, there is no need to use quotes (" " or ' ') since we are evaluating a mathematical expression this time.

main.dart


              12345
            
void main() {
  print('Two');   // String 
  print('2');     // String   
  print(2);       // Number    
}

Math Operations

Almost no program can do without mathematical calculations, so Dart supports the following mathematical operations:

main.dart


              1234567
            
void main() {
  print(1+2); // Adding numbers
  print(9-3); // Subtracting numbers
  print(4/2); // Division of numbers
  print(4*2); // Multiplication of numbers
  print(5%2); // Get the remainder from the whole division of 5 by 2
}

Math Expressions

We also can write math expressions. The sequence of actions will work the same as in mathematics, where 2+2*2 = 6, because the multiplication is done before the addition.

main.dart


              123
            
void main() {
  print(2+2*2); // Output 6
}

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Avsnitt 1. Kapitel 5

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Kursinnehåll

Introduction to Dart

1. First Acquaintance with Dart

Dart Overview Your First Dart Application Function print() in Dart Dart Comments Basic Math Operations

2. Variables and Data Types in Dart

Data Types in Dart Variables in Dart Properties of Numbers in Dart String in Dart Bool, Equality and Relational Operators in Dart List in Dart Indexes in Dart

3. Conditional Statements

if Statement in Dart if...else Statement in Dart else-if Statement in Dart switch-case Statement in Dart

4. Loops in Dart

Introduction to Loops while Loop in Dart do while Loop in Dart For-Loop in Dart Increment and Decrement break and continue

Basic Math Operations

Numbers

You already know how to use the print() function. We used to output text, but what about numbers and mathematical calculations?

Remember to use print() if you want to display your data. Also, there is no need to use quotes (" " or ' ') since we are evaluating a mathematical expression this time.

main.dart


              12345
            
void main() {
  print('Two');   // String 
  print('2');     // String   
  print(2);       // Number    
}

Math Operations

Almost no program can do without mathematical calculations, so Dart supports the following mathematical operations:

main.dart


              1234567
            
void main() {
  print(1+2); // Adding numbers
  print(9-3); // Subtracting numbers
  print(4/2); // Division of numbers
  print(4*2); // Multiplication of numbers
  print(5%2); // Get the remainder from the whole division of 5 by 2
}

Math Expressions

We also can write math expressions. The sequence of actions will work the same as in mathematics, where 2+2*2 = 6, because the multiplication is done before the addition.

main.dart


              123
            
void main() {
  print(2+2*2); // Output 6
}

Var allt tydligt?

Tack för dina kommentarer!

Avsnitt 1. Kapitel 5