Compilare: user.c: In function ‘forma_poloneza’: user.c:18:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j, n=0, nr=0, ist=-1, ifp=-1; ^ user.c: In function ‘calculeaza_expresie’: user.c:107:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j, ist=-1; ^ user.c: In function ‘main’: user.c:149:5: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s",expr); ^