Compilare: main.cpp: In function 'int lee()': main.cpp:97:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'void read()': main.cpp:126:23: warning: unused variable 'q' [-Wunused-variable] int l = X, c = Y, q; ^ main.cpp: In function 'void Read(int&)': main.cpp:40:42: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(f, MAX, 1, IN), pos = 0; ^ main.cpp:45:42: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(f, MAX, 1, IN), pos = 0; ^