spirala1.cpp:21: warning: integer constant is too large for 'long' type spirala1.cpp: In function 'void back(int)': spirala1.cpp:26: warning: unused variable 's1' spirala1.cpp: In function 'int main()': spirala1.cpp:104: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result spirala1.cpp:105: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result spirala1.cpp:106: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result spirala1.cpp: In function 'int spir(int)': spirala1.cpp:101: warning: control reaches end of non-void function