Compilare: main.cpp: In function 'int main()': main.cpp:69:26: warning: format '%ld' expects argument of type 'long int', but argument 2 has type 'llu {aka long long unsigned int}' [-Wformat=] printf("%ld\n",eval()); ^ main.cpp:66:37: 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); ^ main.cpp:67:39: 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); ^ main.cpp:68:21: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(s,N,stdin); ^