Compilare: user.cpp: In function ‘long long unsigned int suma(char*)’: user.cpp:13: warning: unused variable ‘x’ user.cpp: In function ‘int main()’: user.cpp:73: warning: comparison between signed and unsigned integer expressions user.cpp:56: warning: unused variable ‘j’ user.cpp: In function ‘long long unsigned int suma(char*)’: user.cpp:12: warning: ‘nr’ may be used uninitialized in this function user.cpp:12: warning: ‘cnt’ may be used uninitialized in this function