word process for rpm

#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <fcntl.h>
int main()
{
        int i, count = 0, isset = 0, fd;
        char arr[1000];
        while ((i = getchar()) != EOF)
        {
                if (i == '\"')
                {
                        if (isset == 0) {
                                isset = 1;
                                arr[0] = '\0';
                                count = 0;
                        } else {
                                arr[count++] = '\0';
                                if (strlen(arr) > 3 && strcmp(arr+strlen(arr)-3,"rpm") == 0) {
                                        printf("%s\n",arr);
                                }
                                isset = 0;
                        }
                }
                else
                {
                        if (isset == 1)
                                arr[count++] = i;
                }
        }
        return 0;
}