Golang (Go) Tutorial - Functions
⚙️ Functions - Reusable Code
🌟 Real Life:
🧮 Calculator:
Input: 5, 3 → Add function → Output: 8
📱 Phone Call:
Input: number → Dial function → Output: connected
📝 Function Syntax
func functionName(param type) returnType {
// code
return value
}
// Example
func add(a int, b int) int {
return a + b
}🎯 Function Types
| Type | Example |
|---|---|
| No parameters | func greet() { } |
| With parameters | func add(a, b int) { } |
| Return value | func add() int { } |
| Multiple returns | func divide() (int, error) |
Example
func add(a, b int) int {
return a + b
}
result := add(5, 3)