lipsa.cpp: In function 'int main()': lipsa.cpp:16: warning: suggest parentheses around arithmetic in operand of '^' lipsa.cpp:10: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result lipsa.cpp:14: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result