Borderou de evaluare (job #10178)

Compilare: user.c: In function 'main': user.c:14:5: warning: statement with no effect [-Wunused-value] user.c:15:5: warning: statement with no effect [-Wunused-value] user.c:7:14: warning: unused variable 'ecuatie' [-Wunused-variable] user.c:11:11: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] user.c:14:9: warning: 'a' is used uninitialized in this function [-Wuninitialized]