lbd.cpp: In function 'int main()': lbd.cpp:80: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result lbd.cpp:81: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result lbd.cpp:82: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result lbd.cpp:89: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result lbd.cpp:84: warning: 'iii' may be used uninitialized in this function lbd.cpp:84: warning: 'jjj' may be used uninitialized in this function