sirag1.cpp: In constructor 'instream::instream(const char*)': sirag1.cpp:16: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result sirag1.cpp: In constructor 'instream::instream(const char*)': sirag1.cpp:16: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result sirag1.cpp: In constructor 'instream::instream(const char*)': sirag1.cpp:16: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result sirag1.cpp: In member function 'void instream::advance()': sirag1.cpp:42: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result sirag1.cpp: In function 'int main()': sirag1.cpp:74: warning: statement has no effect sirag1.cpp:59: warning: unused variable 'j'