Eroare de compilare: main.cpp: In function 'int main()': main.cpp:51:31: error: 'stodut' was not declared in this scope freopen("evaluare.out", "w", stodut); ^~~~~~ main.cpp:73:33: error: 'assert' was not declared in this scope assert(isdigit(expression[i])); ^ main.cpp:50:36: 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); ^ Non zero exit status: 1