write to file

~/C/libserialport/listen.c

@@ -65,6 +65,9 @@ int main(int argc, char **argv) {
 
   signal(SIGINT, handle_sigint);
 
+  FILE *output_file;
+  output_file = fopen("./abc.txt", "w");
+
   /* Reading lines from serial port. */
   bool reading = true;
   while (reading && !INTERRUPT) {
@@ -94,8 +97,10 @@ int main(int argc, char **argv) {
     }
 
     puts(buffer);
+    fputs(buffer, output_file);
   }
 
+  fclose(output_file);
   free(buffer);
 
   return 0;