perechi1.cpp: In function 'int ciur()': perechi1.cpp:11: warning: unused variable 'n' perechi1.cpp:25: warning: no return statement in function returning non-void perechi1.cpp: In function 'int main()': perechi1.cpp:64: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result perechi1.cpp:65: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result perechi1.cpp:67: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result