Compilare: user.cpp: In function ‘void drum(short int, short int)’: user.cpp:64:40: warning: unknown conversion type character 0x20 in format [-Wformat=] fprintf( fout, "%h %h\n", X, Y ); ^ user.cpp:64:40: warning: unknown conversion type character 0xa in format [-Wformat=] user.cpp:64:40: warning: too many arguments for format [-Wformat-extra-args] user.cpp:75:44: warning: unknown conversion type character 0x20 in format [-Wformat=] fprintf( fout, "%h %h\n", X, Y ); ^ user.cpp:75:44: warning: unknown conversion type character 0xa in format [-Wformat=] user.cpp:75:44: warning: too many arguments for format [-Wformat-extra-args] user.cpp: In function ‘void r(short int&)’: user.cpp:21:50: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread( buff, 1, sizeof( buff ), fin ); ^ user.cpp:28:50: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread( buff, 1, sizeof( buff ), fin ); ^ user.cpp: In function ‘int main()’: user.cpp:99:42: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread( buff, 1, sizeof( buff ), fin ); ^