Borderou de evaluare (job #5381)

Compilare: user.c: In function ‘main’: user.c:28:1: warning: implicit declaration of function ‘power’ [-Wimplicit-function-declaration] user.c:5:37: warning: unused variable ‘i’ [-Wunused-variable] user.c:5:35: warning: unused variable ‘r’ [-Wunused-variable] user.c:9:7: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result]