lcdr.cpp: In function 'void ReadInput(const char*)': lcdr.cpp:26: warning: unused variable 'start' lcdr.cpp:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result lcdr.cpp:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result lcdr.cpp:35: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result lcdr.cpp: In function 'int main()': lcdr.cpp:89: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result