bila.cpp: In function 'int main()': bila.cpp:12: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result bila.cpp:16: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result bila.cpp:9: warning: 'hf' may be used uninitialized in this function bila.cpp:9: warning: 'nf' may be used uninitialized in this function