Mega Code Archive
0055 Control Variables Inside the for Loop
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It is possible to declare the variable inside the initialization portion of the for.
public class Main {
public static void main(String args[]) {
for (int n = 10; n > 0; n--){
System.out.println("tick " + n);
}
}
}
The output:
tick 10
tick 9
tick 8
tick 7
tick 6
tick 5
tick 4
tick 3
tick 2
tick 1
The scope n ends when the for statement ends. Here is a program that tests for prime numbers using for loop statement.
public class Main {
public static void main(String args[]) {
int num;
boolean isPrime = true;
num = 50;
for (int i = 2; i <= num / 2; i++) {
if ((num % i) == 0) {
isPrime = false;
break;
}
}
if (isPrime)
System.out.println("Prime");
else
System.out.println("Not Prime");
}
}
The output:
Not Prime
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