cuburi.cpp:1:18: sydio.h: No such file or directory cuburi.cpp: In function `int main()': cuburi.cpp:3: `stdin' undeclared (first use this function) cuburi.cpp:3: (Each undeclared identifier is reported only once for each function it appears in.) cuburi.cpp:3: `freopen' undeclared (first use this function) cuburi.cpp:6: parse error at end of input