Question

Write a while loop that prints userNum divided by 2 (integer division) until reaching 1. Follow each number by a space. Example output for userNum = 40:

20 10 5 2 1

.....

my code:

#include <iostream>
using namespace std;

int main() {
int userNum;

userNum = 40;

/* Your solution goes here */
while (userNum != 1){
userNum = userNum/2;
cout << userNum << " ";  
}

cout << endl;

return 0;
}

........

but as a result i keep getting : "Program end never reached. This is commonly due to an infinite loop or infinite recursion."....fix this?

Answer 1

The detailed solution is provided below:

The corrected code (based on the code provided in the question) is presented below:

#include <iostream>
using namespace std;

int main() {
int userNum;

userNum = 40;

/* Your solution goes here */

//the while loop will be executed as long as the userNum is greater than or equal to 1
while (userNum >= 1){
userNum = userNum/2;
cout << userNum << " ";  
}

cout << endl;

return 0;
}

Output: (As obtained from the console window)

20 10 5 2 1

So, actually in the original code provided by you, the loop was running infinitely as long as unserNum is not equal to 1. There has been a slight change. The condition will be >=1.

Hope this helps.