I need the following c program to output prime number without using math functio

Question

I need the following c program to output prime number without using math functions.

As of right now it isn't out putting anything and I'm not sure why.

#include <stdio.h>
#include <stdlib.h>


int main()

{

int startnum = 1; //program begins at 1
int endnum = 1000; //program ends at 1000
int divisor = 2;//divides
int number;

((int >= 1) (int <= 1000));

for (divisor = 2 ; divisor <= number ; divisor++);
{
if (number%divisor ==0);
}
if ( number == divisor)
printf("%d ", number);

return 0;
}

Explanation / Answer

#include
#include

int main()
{

int startnum = 1; //program begins at 1
int endnum = 1000; //program ends at 1000
int divisor = 2; //divides
int number, i;

bool flag = true;

number = i= startnum;

printf("Prime numbers greater than %d and less than %d are: ", startnum, endnum);
while (i <= endnum ) {
number++;
i++;

if (number != 2) {
for ( divisor=2; divisor < number; divisor++) {
if (number % divisor == 0) {
flag = false;
break;
}
}
}

if (flag) printf("%d ", number);

flag = true;
divisor = 2;
}

return 0;
}

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