In file included from /usr/include/c++/3.2.2/backward/fstream.h:31, from cerc.cpp:1: /usr/include/c++/3.2.2/backward/backward_warning.h:32:2: warning: #warning This file includes at least one deprecated or antiquated header. Please consider using one of the 32 headers found in section 17.4.1.2 of the C++ standard. Examples include substituting the <X> header for the <X.h> header for C++ includes, or <sstream> instead of the deprecated header <strstream.h>. To disable this warning use -Wno-deprecated. cerc.cpp:2: redeclaration of C++ built-in type `long' cerc.cpp: In function `int main()': cerc.cpp:7: `n' undeclared (first use this function) cerc.cpp:7: (Each undeclared identifier is reported only once for each function it appears in.) cerc.cpp:8: `q' undeclared (first use this function) cerc.cpp:14: `i' undeclared (first use this function) cerc.cpp:16:24: warning: no newline at end of file cerc.cpp:16: parse error at end of input