Borderou de evaluare (job #159673)

Compilare: user.c:5:9: warning: built-in function ‘pow’ declared as non-function [enabled by default] user.c: In function ‘back’: user.c:46:12: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] user.c: In function ‘main’: user.c:54:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] user.c:55:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] user.c:57:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]