patru.cpp: In function 'int main()': patru.cpp:8: warning: unused variable 'u' patru.cpp:8: warning: unused variable 'max' patru.cpp:8: warning: unused variable 'p' patru.cpp:11: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result patru.cpp:14: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result