balcon.cpp: In function 'int main()': balcon.cpp:124: warning: unused variable 'ok' balcon.cpp:124: warning: unused variable 'h' balcon.cpp:124: warning: unused variable 'k' balcon.cpp:124: warning: unused variable 'x' balcon.cpp:125: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result balcon.cpp:129: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result