arbgraf.cpp: In function 'int main()': arbgraf.cpp:116: warning: comparison between signed and unsigned integer expressions arbgraf.cpp:95: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result arbgraf.cpp:98: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result