Compilare: user.cpp: In function ‘bool factor()’: user.cpp:74:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:134:55: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "UE%c", &x); ^ user.cpp:147:60: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "LSE%c", &x); ^ user.cpp:171:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (in, "%d\n", &n); ^ user.cpp: In function ‘bool factor()’: user.cpp:46:10: warning: ‘termen’ may be used uninitialized in this function [-Wmaybe-uninitialized] bool termen; ^