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C++ program that display all the prime numbers between 2 and 1000

###### Posted by Samath

Last Updated:
December 24, 2014

Develop a program to display all the prime numbers between 2 and 1,000, inclusive. Display eight prime numbers per line. Numbers are separated by exactly one space.

Solution:

#include <iostream> using namespace std; int main() { int num, i, countFactors; int countBreak = 0; cout << "Prime numbers (1-1000) : " << endl; for (num = 1; num <= 1000; num++) { countFactors = 0; for (i = 2; i <= num; i++) { if (num % i == 0) { countFactors++; } } if (countFactors == 1) { cout << num << " "; countBreak++; if(countBreak == 8) { cout<<endl; countBreak = 0; } } } system("pause"); return 0; }