Help solve a problem in C

#include <stdio.h>
#include <string.h>






int main ()
{
const int arsize = 100;
char ae [arsize];
for (int i = 0;i < arsize;i++)
ae[i] = '\0';
fgets (ae,arsize,stdin);
for (int i = 0;i < arsize;i++)
{
if (isalpha(ae[i])&&!islower(ae[i]))
printf ("%c",ae[i]);
}
}

C

#include <stdio.h>

#include <string.h>













int main ()

{

    const int arsize = 100;

    char ae [arsize];

    for (int i = 0;i < arsize;i++)

        ae[i] = '\0';

    fgets (ae,arsize,stdin);

    for (int i = 0;i < arsize;i++)

    {

        if (isalpha(ae[i])&&!islower(ae[i]))

            printf ("%c",ae[i]);

    }

}