Here my problem i can't compile this program at gcc on cygwin. It show me this message. /cygdrive/c/WINDOWS2/TEMP/ccOgyy6e.o: In function `main': /cygdrive/c/WINDOWS2/TEMP/ccOgyy6e.o(.text+0x14): undefined reference to `printf ' /cygdrive/c/WINDOWS2/TEMP/ccOgyy6e.o(.text+0x1c): undefined reference to `printf ' collect2: ld returned 1 exit status And this is the ode of the program that i am trying to compile. A simple program just to test it. #include<Stdio.h> main () { printf("Ola"); printf("Oi"); } __gccmain() { } exit() { while(1); } atexit() { while(1); } What is happening? How i fix it? __________________________________________________________________________ Acabe com aquelas janelinhas que pulam na sua tela. AntiPop-up UOL - É grátis! http://antipopup.uol.com.br/