This topic is about Go – Nested for Loops.
Go programming language allows to use one loop inside another loop. The following section shows a few examples to illustrate the concept −
Syntax
The syntax for a nested for loop statement in Go is as follows −
for [condition | ( init; condition; increment ) | Range] {
for [condition | ( init; condition; increment ) | Range] {
statement(s);
}
statement(s);
}
Example
The following program uses a nested for loop to find the prime numbers from 2 to 100 −
package main
import "fmt"
func main() {
/* local variable definition */
var i, j int
for i = 2; i < 100; i++ {
for j = 2; j <= (i/j); j++ {
if(i%j==0) {
break; // if factor found, not prime
}
}
if(j > (i/j)) {
fmt.Printf("%d is prime\n", i);
}
}
}
When the above code is compiled and executed, it produces the following result −
2 is prime 3 is prime 5 is prime 7 is prime 11 is prime 13 is prime 17 is prime 19 is prime 23 is prime 29 is prime 31 is prime 37 is prime 41 is prime 43 is prime 47 is prime 53 is prime 59 is prime 61 is prime 67 is prime 71 is prime 73 is prime 79 is prime 83 is prime 89 is prime 97 is prime
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