ziduri.cpp: In function 'void bf()': ziduri.cpp:39: warning: comparison between signed and unsigned integer expressions ziduri.cpp:23: warning: unused variable 'j' ziduri.cpp: In function 'int main()': ziduri.cpp:60: warning: unused variable 'x' ziduri.cpp:60: warning: unused variable 'y' ziduri.cpp:63: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result ziduri.cpp:68: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result