lift.cpp: In function 'int main()': lift.cpp:12: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result lift.cpp:16: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result lift.cpp:11: warning: 'etj' may be used uninitialized in this function