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POC++ finding all prime numbers from 1 to a number entered
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  1. POC++ finding all prime numbers from 1 to a number entered
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    copied!<p>So the point is to have the program find and list all prime numbers between 1 and the number you enter. I'm using number_test as the number tested for prime, and divisor and the number to divide by.</p> <p>I'm not sure what's wrong, as to me it looks functionally the same as the program posted here: <a href="https://stackoverflow.com/questions/5200879/printing-prime-numbers-from-1-through-100">Printing prime numbers from 1 through 100</a> with some minor changes (inputting a number, changing "i" to less than the number entered).</p> <p>I've been looking for the past three or four days, and I haven't found anything that really answers this question fully, to the degree I need for class. Any help is much appreciated.</p> <pre><code>#include iostream #include conio.h using namespace std; void main(void){ //Declare variables int number_entered; //Get inputs cout &lt;&lt; "This program lists all prime numbers from 1 through a positive number entered." &lt;&lt; endl; cout &lt;&lt; "Please enter a positive integer." &lt;&lt; endl; cin &gt;&gt; number_entered; cout &lt;&lt; "Displaying all numbers from 1 to " &lt;&lt; number_entered &lt;&lt; endl &lt;&lt; "Press any key to continue..." &lt;&lt; endl; getch(); for(int number_test = 2; number_test &lt; number_entered; number_test++){ for(int divisor = 2; divisor &lt; number_test; divisor++){ if(number_test % divisor == 0){ break; } else if(number_test % divisor != 0){ cout &lt;&lt; number_test &lt;&lt; " "; break; } } } getch(); } </code></pre>
 

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