Compilare: user.cpp: In function ‘int smallerThen(int, int, int, int&)’: user.cpp:135:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, rez = 0; ^ user.cpp: In function ‘void answerQuestions()’: user.cpp:176:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j; ^ user.cpp: In function ‘void readFile()’: user.cpp:19:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &n, &q); ^ user.cpp:24:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &a[i][0]); ^ user.cpp:27:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &a[i][j]); ^ user.cpp: In function ‘void answerQuestions()’: user.cpp:180:43: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d%d", &op, &st, &dr); ^