Borderou de evaluare (job #33894)

Compilare: user.c: In function ‘main’: user.c:23:1: warning: implicit declaration of function ‘sqrt’ [-Wimplicit-function-declaration] user.c:23:5: warning: incompatible implicit declaration of built-in function ‘sqrt’ [enabled by default] user.c:8:32: warning: variable ‘f’ set but not used [-Wunused-but-set-variable] user.c:8:30: warning: variable ‘a’ set but not used [-Wunused-but-set-variable] user.c:11:7: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result]