Compilare: user.cpp: In function ‘int main()’: user.cpp:41:62: warning: operation on ‘StackSize’ may be undefined [-Wsequence-point] t[Stack[++StackSize]=v[i]]=Stack[StackSize-1]; ^ user.cpp:17:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d ",&N); ^ user.cpp:18:29: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(str,sizeof str,IN); ^