Native Development

[lyon819]

Does anyone know why txt file is empty without any content??

                         FILE* f= fopen("/shared/documents/save.dat", "w");
                           if(f==NULL){
                             fprintf(stderr,"Cannot create output.txt\n");
                             _exit(1);
                           }
                           fprintf(f,"Hello World");

File is created, but the txt file is empt without "Hello World".

[lyon819 · Accepted solution]

Ha ha solved.

fclose(f);

[peter9477]

Yes, without closing it, data isn't necessarily written out to the filesystem.

You should also be able to do fflush(f) to force the data to be written out, allowing you to continue writing more data afterwards. It's somewhat unusual to want to do this but handy for log files, among other things.