Course Content

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

Function print() in Dart

Let's take a detailed look at how to use the print() function:

Print with Text

main.dart


              123
            
void main() {
  print("Text you want to output");
}

The program prints information to the console from the parentheses of the print() function. If we want to output the text to the console, we must write it inside the quotation marks.

main.dart


              1234
            
void main() {
  print('Hi, Codefinity!');
  print("I want know more");
}

Rules

The text can be written in single quotation marks:

'Hi, Codefinity!'

The text also can be written in double quotation marks:

"I want know more"

The main rule when using the print() function is that it's important for the quotation marks surrounding the text to match on both sides. For example, if we use single quotes to print text ('like this'), we must close them with single quotes as well. This allows Dart to correctly recognize it as text to be printed, rather than a variable name or instruction. If the quotation marks do not match, or if they are absent altogether, it can lead to a runtime error in the program.

Print with Numbers

Working with numbers is different from working with text. Suppose you want to display numbers. Since we work with number values, you don't need to use quotes (" " or ' ').

main.dart


              123
            
void main() { 
  print(2);   
}

Everything was clear?

Thanks for your feedback!

Section 1. Chapter 3

Ask AI

Ask anything or try one of the suggested questions to begin our chat

Course Content

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

Function print() in Dart

Let's take a detailed look at how to use the print() function:

Print with Text

main.dart


              123
            
void main() {
  print("Text you want to output");
}

The program prints information to the console from the parentheses of the print() function. If we want to output the text to the console, we must write it inside the quotation marks.

main.dart


              1234
            
void main() {
  print('Hi, Codefinity!');
  print("I want know more");
}

Rules

The text can be written in single quotation marks:

'Hi, Codefinity!'

The text also can be written in double quotation marks:

"I want know more"

Print with Numbers

Working with numbers is different from working with text. Suppose you want to display numbers. Since we work with number values, you don't need to use quotes (" " or ' ').

main.dart


              123
            
void main() { 
  print(2);   
}

Everything was clear?

Thanks for your feedback!

Section 1. Chapter 3