prieteni.cpp: In function 'void read()': prieteni.cpp:40: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result prieteni.cpp:44: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result prieteni.cpp: In function 'void solve()': prieteni.cpp:97: warning: comparison between signed and unsigned integer expressions