GO Tutorial

SYNTAX IN GO

🧾 Go Syntax: The Building Blocks

Go syntax is clean, minimal, and easy to understand. It drops many complex features of other languages, making code more readable and maintainable. Let’s explore the basic structure!

📘 Tip: Unlike Python, Go does not use indentation for blocks. Instead, it uses curly braces { }.

📌 1. Basic Go Program Structure

package main

import "fmt"

func main() {
    fmt.Println("Welcome to Go Syntax!")
}

Explanation:

package main: Required to build an executable program
import "fmt": Imports the formatting package
func main(): The main function where execution starts
fmt.Println(): Prints text with a new line

🧮 2. Declaring Variables

var name string = "Go"
age := 10

fmt.Println("Name:", name)
fmt.Println("Age:", age)

Explanation:

var name string = "Go": Explicit variable declaration
age := 10: Short variable declaration (type inferred)

🧾 3. Comments in Go

// This is a single-line comment

/* 
   This is a 
   multi-line comment 
*/

Use comments to explain your code. Go supports both single-line and multi-line comments.

🧠 4. Data Types in Go

Go has several basic types:

string – sequence of characters
int, float64 – numbers
bool – true/false
array, slice, map, struct – collections

🌀 5. Control Statements

if age > 18 {
    fmt.Println("Adult")
} else {
    fmt.Println("Minor")
}

No parentheses needed in if conditions! Just curly braces.

🔁 6. Looping with `for`

for i := 1; i <= 5; i++ {
    fmt.Println("Count:", i)
}

Note: Go has only one loop keyword: for. It replaces while too.

🔚 7. Ending a Program

The main() function ends when all its code is executed. There’s no return 0; like in C.

🎉 Summary: Go syntax is clean and efficient. You use packages, functions, and clear blocks. There’s less boilerplate and more readable code!

💡 Try This Yourself!

Head to Go Playground and try writing a program that:

Declares your name and age
Prints a message based on age using if
Uses a loop to print your name 3 times

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