Compilare: main.cpp: In member function 'void matrix::initialize()': main.cpp:82:43: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d ", &n, &m, &q); ^ main.cpp:85:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%s", buffer); ^ main.cpp: In member function 'void matrix::solveQueries()': main.cpp:179:58: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d ", &x1, &y1, &x2, &y2); ^