Compilare: user.cpp: In function ‘void euler(int)’: user.cpp:14: warning: comparison between signed and unsigned integer expressions user.cpp:11: warning: unused variable ‘i’ user.cpp: In function ‘int main()’: user.cpp:59: warning: format ‘%d’ expects type ‘int*’, but argument 2 has type ‘long int*’ user.cpp:81: warning: suggest parentheses around ‘&&’ within ‘||’ user.cpp:84: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘long int’ user.cpp:55: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:56: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:57: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:59: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:62: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:75: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result