Programme for composite number??

Question

If i enter any no. All composite no. should be print in between 1 and given no.

Answer 1

Sure I will do this.

Answer 2

Cool i got it thanks

Answer 3

#include <iostream>
using namespace std;

int main() {
int number;
cin >> number;
for (int i = 3; i <= number ; i++){
for (int j = 2; j < i; j++){
if (i%j == 0){
cout << i << " ";
j=i;
}
}
}
return 0;
}

edited it a bit because i had some not needed code there

Answer 4

/* from @pegasus code, i edited the second for to make the program faster, because we just need to check the number can divide from 2 to square root the number

#include <iostream>
#include <math.h>
using namespace std;

int main() {
int number;
cin >> number;
for (int i = 3; i <= number ; i++){
for (int j = 2; j <= sqrt (i); j++){
if (i%j == 0){
cout << i << " ";
j=i;
}
}
}
return 0;
}