Eroare de compilare: user.c:3:19: error: conio.h: No such file or directory user.c: In function ‘calculare’: user.c:36: warning: unused variable ‘rez’ user.c: In function ‘main’: user.c:53: warning: implicit declaration of function ‘pow’ user.c:53: warning: incompatible implicit declaration of built-in function ‘pow’ user.c:53: warning: overflow in implicit constant conversion user.c:54: warning: implicit declaration of function ‘strlen’ user.c:54: warning: incompatible implicit declaration of built-in function ‘strlen’ user.c:47: warning: unused variable ‘t’ user.c:50: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:53: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result