Compilare: user.cpp: In function ‘int main()’: user.cpp:153:7: warning: variable ‘n’ set but not used [-Wunused-but-set-variable] int n, m, i, x, y, dr, poz, aux, t; ^ user.cpp:153:31: warning: unused variable ‘aux’ [-Wunused-variable] int n, m, i, x, y, dr, poz, aux, t; ^ user.cpp: In function ‘char readch()’: user.cpp:31:26: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(s, 1, BUFF, in); ^