I used some examples for calculating prime numbers up to 50,000 and had a code that worked great (no user input which is what the instructor wanted. But she clarified and said she actually wanted the output to look somethihng like this:

Start End Number of Primes

1 1000 168

1001 2000 135

2001 3000 127

3001 4000 120

4001 5000 119

5001 6000 114

6001 7000 117

7001 8000 107

8001 9000 110

9001 10000 112

…

…

…

49001 50000 98

Total primes in the first 50 chiliads: 5133

Average number per chiliad: 102.66

Okay so I've been working on this and at first I had it outputting primes in one column and zeros in another in an infinite loop untill I nested a while loop in a for loop. Ignoring the bottom 2 lines of output (I'll figure out those later) please look at what I have and help me understand why I get NO output.

//Code:#include <iostream> #include <iomanip> using namespace std; void prime_num(int);//Void to specify no function type. int primeCount = 0, numCount1 = 0, numCount2 = 0, rangeStart = 1, rangeEnd = 1000; int main() { int num = 50000; //Establishing variables prime_num(num); } void prime_num( int num) { bool isPrime = true; for ( int num2 = 2; num2 <= num; num2++) { for ( int num3 = 2; num3 < num2; num3++)//Forloops to create count. { if ( num2 % num3 == 0 )//if with a mod to test for !prime. { isPrime = false; break;//break from if... for(isPrime; numCount1 < 1000 && numCount2 < 50000; numCount1++); { primeCount++; numCount2++; break; while(numCount1 >= 1000) { cout << rangeStart << setw(5) << rangeEnd << setw(5)<< primeCount << endl;//Print the range and the current primeCount for it primeCount = 0; //Reset primeCount and numCount1 numCount1 = 0; rangeStart = rangeStart + 1000; rangeEnd = rangeEnd + 1000; break//break from while to reset the ranges and and first two counts } } } } isPrime=true; } system("pause"); }

PLEASE HELP I have one more day to reSubmit it.