plus.cpp: In function 'int main()': plus.cpp:114: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result plus.cpp:115: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result plus.cpp:117: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result plus.cpp:119: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result plus.cpp: In function 'void adun()': plus.cpp:17: warning: 'dimrez' may be used uninitialized in this function