initial commit

pointers/pointers.go

@@ -0,0 +1,37 @@
+package main
+
+import "fmt"
+
+// go supports pointers allowing you to pass refs to values and records
+// in your program
+
+
+//this func takes in an int as a param
+func zeroval(ival int){
+	ival = 0
+}
+
+//this func takes in an pointer to an int as a parameter
+func zeroptr (iptr *int) {
+	*iptr = 0
+}
+
+func main() {
+	//display initial value of i
+	i := 1
+	fmt.Println("initial:",i)
+
+	//display the value of i after passing to zeroval
+	zeroval(i)
+	fmt.Println("zeroval:",i)
+
+	//display the value of the data @ the memory address of i aka i's pointer
+	zeroptr(&i)
+	fmt.Println("zeroptr:",i)
+
+	//pointers can be printed as well and will return their memory address
+	fmt.Println("pointer:",&i)
+
+	//zeroval doesnt change the val of i but zeroptr does because it edits the data at the memory address
+
+}