Compilare: user.cpp: In function ‘void solve()’: user.cpp:24:9: warning: unused variable ‘par’ [-Wunused-variable] int par = 0; ^ user.cpp: In function ‘void readFile()’: user.cpp:18:24: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(s, 100009, f); ^ user.cpp: In function ‘void answerQuestions()’: user.cpp:50:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &n); ^ user.cpp:55:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &nr); ^