Prime Number Generator.

[willistwigge]

Good Afternoon,

I am trying to create a program that generates all the prime numbers from 2 to n, an intiger input by the user. I tried to accomplish this by using a function that i created by the name is_prime:

#include <stdio.h>
#include <stdlib.h>
 
int is_prime(int n)
{int k, limit;
if (n == 2)
return 1;
if (n % 2 == 0)
return 0;
limit = n / 2;
for ( k = 3; k <= limit; k += 2)
if (n % k == 0)
return 0;
return 1;}

I want to include a counter in my program so that the final output looks something like this:
1: 2
2: 3
3: 5
4: 7
5: 11
6: 13
7: 17
etc.

I would really appreciate some help with the actual function.
Thanks in advance.

[Banfa]

What is the problem? The function you have posted looks like it should work.

[whodgson]

You are identifying the prime but you are not printing it out.
Some where in there you need to declare and initialize (int count=0), increment it (count++) after each iteration and print it.