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#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#if EMSCRIPTEN
#include <emscripten.h>
#endif
int line = 0;
void main_loop(void *arg)
{
char str[10] = {0};
int ret;
if (line == 0) {
ret = fgetc(stdin);
if (ret != EOF) putc(ret, stdout);
if (ret == '\n') line++;
} else if (line > 0) {
ret = scanf("%10s", str);
if (ret > 0) puts(str);
}
if (ferror(stdin) && errno != EAGAIN) {
puts("error");
exit(EXIT_FAILURE);
}
if (feof(stdin)) {
puts("eof");
exit(EXIT_SUCCESS);
}
clearerr(stdin);
}
int main(int argc, char const *argv[])
{
fcntl(STDIN_FILENO, F_SETFL, O_NONBLOCK);
#if EMSCRIPTEN
emscripten_set_main_loop(main_loop, 60, 0);
#else
while (1) main_loop(NULL); sleep(1);
#endif
return 0;
}
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