Borderou de evaluare (job #10175)

Compilare: user.c: In function 'main': user.c:15:5: warning: statement with no effect [-Wunused-value] user.c:16:5: warning: statement with no effect [-Wunused-value] user.c:8:10: warning: unused variable 'c' [-Wunused-variable] user.c:7:14: warning: unused variable 'ecuatie' [-Wunused-variable] user.c:12:11: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] user.c:15:9: warning: 'a' is used uninitialized in this function [-Wuninitialized]