Is there a way in which the program can count the number of iterations in which it took for the variable " counter
" to reach its limit? I'm writing a basic program that demonstrates the use of a while loop and have been asked to display the number of iterations which have been printed out.
PS Sorry if there are any errors in the indentation/formatting of the code, I'm new to Java/programming. Thanks in advance.
public class Main {
public static void main(String[] args) {
for (int counter=2; counter<=40; counter+=2) {
System.out.println(counter);
}
System.out.println("For loop complete.");
int counter = 1;
while (counter <= 500) {
System.out.println(counter);
counter++;
}
}
}
If I've understood your question correctly, you're looking for something to keep incrementing the value as part of the loop rather than as a separate statement. Well, you could make it more terse using the ++
operator.
int x = 0;
while(x++ < 100) {
System.out.println(x);
}
Some Detail
x++
is shorthand for x = x + 1
. There is a slight caveat with this. x++
means return the value of x, then order it. So...
while(x++ < 100)
Will print out 0,1,2,3,4,5....99 (therefore iterating exactly 100 times) However, if you have ++x
instead, this says to increment then return. So:
while(++x < 100)
would print out 1,2,3,4,5...99 (and iterate 99 times).
Just added a counter variable to track the loop execution count.
package main;
public class Main {
public static void main(String[] args) {
for (int counter=2; counter<=40; counter+=2) {
System.out.println(counter);
}
System.out.println("For loop complete.");
int counter = 1;
int loopExecCounter = 0;
while (counter <= 500) {
loopExecCounter = loopExecCounter + 1;
System.out.println(counter);
counter++;
}
System.out.print(loopExecCounter);
}
}
Hope this helps!
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