Compilare: user.cpp: In function ‘int fill(int, int)’: user.cpp:60: warning: suggest parentheses around ‘&&’ within ‘||’ user.cpp: In function ‘int main()’: user.cpp:122: warning: format ‘%ld’ expects type ‘long int’, but argument 2 has type ‘int’ user.cpp:108: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:109: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:110: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:113: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result