tom.cpp: In function 'int main()': tom.cpp:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result tom.cpp:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result tom.cpp:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result tom.cpp:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result tom.cpp:49: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result tom.cpp:14: warning: 'lpj' may be used uninitialized in this function tom.cpp:14: warning: 'cpj' may be used uninitialized in this function tom.cpp:14: warning: 'lpt' may be used uninitialized in this function tom.cpp:14: warning: 'cpt' may be used uninitialized in this function