Borderou de evaluare (job #178165)

Compilare: user.c: In function ‘main’: user.c:23:7: warning: implicit declaration of function ‘abs’ [-Wimplicit-function-declaration] user.c:22:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] user.c:6:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] user.c:7:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] user.c:10:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] user.c:12:12: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]