Eroare de compilare in evaluator: user.c: In function 'main': user.c:5: error: 'FILE' undeclared (first use in this function) user.c:5: error: (Each undeclared identifier is reported only once user.c:5: error: for each function it appears in.) user.c:5: error: 'f' undeclared (first use in this function) user.c:5: warning: implicit declaration of function 'fopen' user.c:6: error: 'fo' undeclared (first use in this function) user.c:8: warning: implicit declaration of function 'fscanf' user.c:8: warning: incompatible implicit declaration of built-in function 'fscanf' user.c:21: warning: implicit declaration of function 'fprintf' user.c:21: warning: incompatible implicit declaration of built-in function 'fprintf' user.c:27:2: warning: no newline at end of file