how to stop a for loop after number of iteration

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I'm trying to stop the for loop ( for (int j = 0; j< num; j++ ) after three times. If I put an if statement if (num ==3) to force the loop to stop, it works ten times.

#include <string>
#include <iostream>
using namespace std;

int main()
{
    double store[3];
    int num=1;
    int i=0;
    while(i<10)
    {
        for (int j = 0; j< num; j++)
        {
            cout << " " << store[j] << "\n";
        }
        num++;

        if (num == 3)
        {
            num = 0;
        }

        i++;
    }
}

Welcome to StackOverflow Farhan! If you need to stop the for loop after 3 times, you can use break.

for (int j = 0; j< num; j++)
{
    if (j == 3) break;
    cout << " " << store[j] << "\n";
}

if i want to stop infinite while loop after 30 iteration, so how can i use , You can declare multiple variables of the same type in a for-loop: public static int seven_sum(int num) { int sum = 0; for (int i = 7, iterations = 0;� Slightly off-topic, but the ideal would be to modify the querying code so that you're only pulling the number of results you need. That may or may not be possible with whatever twitter API you're using. – meagar ♦ May 19 '10 at 13:45

Your for loop is never running more than twice in each iteration of the outer while loop. Moreover, on many of those outer loops, it doesn't run at all (because num == 0).

If you put some 'test' values into store, you will see what is actually happening:

#include <string>
#include <iostream>
using namespace std;

int main()
{
    double store[3];
    int num = 1;
    int i = 0;
    while (i < 10)
    {
        store[0] = store[1] = store[2] = i; /// Add some test values (shows the i count)
        for (int j = 0; j < num; j++)
        {
            cout << " " << store[j] << "\n";
        }
        num++;

        if (num == 3)
        {
            num = 0;
        }

        i++;
    }
}

What you are seeing is the total number of runs through the for loop added up over each while loop - and this just happens to be 10.

Stop a loop after a certain amount of iterations, instead of when a , for k = A statements end. sets k equal to the vector A(:,i) , where i is the iteration number of the loop. For the first loop iteration, k is equal to A(:,1) ; for the second, � If i is greater than or equal to required iterations, stop the loop. You may need to increment i first since it starts at 0 You may need to increment i first since it starts at 0 Yeah, what altenbach said.

If you want to iterate num, or at most 3, times, then just say so in your loop:

for (int j = 0; j < std::max(num, 3); ++j)

Loop Control -- for, while, continue, break :: Basic Program , In practice, the browser provides ways to stop such loops, and in server-side step, i++, Executes after the body on each iteration. For example, the loop below asks the user for a series of numbers, “breaking” when no� condition - Expression that is checked prior to the execution of every iteration. If omitted, this expression evaluates to true. If it evaluates to true, the loop’s statement is executed. If it evaluates to false, the loop stops. final-expression - Expression that is run after every iteration. Usually used to increment a counter.

Loops: while and for, In this small program, the variable number is initialized at 0. iteration of the for loop until the loop breaks, since it is after the break statement. Connect the long leg of the LED to the row in the breadboard where you attached the resistor. Connect the short leg of the LED to one of the power strip columns on your breadboard. Now connect a resistor to pin 3, and put the other leg in a row on the breadboard (a different one than your first LED).

Break, Continue, and Pass Statements in For and While Loops , Just type break; after the statement after which you want to break the loop. Then again the iteration starts and the numbers get printed from 6 onwards. Click the down arrow on the Breakpoints button and select Set Condition. Then type k == 42 into the condition edit field. With the pause button, you don't know what iteration you will be in when you stop, but with the conditional breakpoint, you will. Steven Lord on 10 Jul 2016

Continue and Break in Java, The while statement checks the condition before performing each iteration of the loop. After 8km, stop the car and get out. drive as long as you are not in Camps Bay The variable used in the loop condition is the number i , which you use to� break is used to break or terminate a loop whenever we want. Just type break; after the statement after which you want to break the loop. As simple as that ! Remember, we had also used break statements in switch..case in the previous topic.

Comments
  • @akaBase The value of num is never greater than 2 when the for loop is started!
  • See my comment in the question!