Eroare de compilare: user.cpp: In function ‘int eval()’: user.cpp:19:16: error: invalid operands of types ‘int’ and ‘int()’ to binary ‘operator-’ sum-=termen; ^ user.cpp:19:16: error: in evaluation of ‘operator-=(int, int())’ user.cpp: In function ‘int main()’: user.cpp:60:14: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[100001]’ [-Wformat=] scanf("%s",&v); ^ user.cpp:58:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] {freopen ("evaluare.in","r",stdin); ^ user.cpp:59:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("evaluare.out","w",stdout); ^ user.cpp:60:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",&v); ^