bloc.cpp: In function 'int main()': bloc.cpp:11: warning: unused variable 'j' bloc.cpp:13: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result bloc.cpp:16: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result bloc.cpp:11: warning: 'li' may be used uninitialized in this function bloc.cpp:11: warning: 'lf' may be used uninitialized in this function