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Thread: [c++] writing permissions?

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hello world, i'm writing sdl app generates animation , supposed save each frame bitmap runs, i'm having trouble writing actual file. code follows:
code:
//all drawing complete  char fname[30];  sprintf(fname,"./dump/screen%04d.bmp",n);  printf("saving bmp: \"%s\"... ",fname);  if(sdl_savebmp(screen,fname)==0)  	printf("success!\n");  else  	printf("failure: %s\n",sdl_geterror());  n++;  	if(n>240)  	done=true;
however, upon running yields:
code:
saving bmp: "./dump/screen0000.bmp"... failure: couldn't open ./dump/screen0000.bmp
i believe related permissions in ubuntu, i'm not quite sure (running sudo didn't change anything)... tried creating file fopen(fname,"w") test, returns null. reason wouldn't able write file? it's running home directory, , sudo fails. :s

this may stupid question directory "dump" exist?


Forum The Ubuntu Forum Community Ubuntu Specialised Support Development & Programming Programming Talk [c++] writing permissions?


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