Compilare: user.cpp: In function ‘int suma(int*, int, int)’: user.cpp:9: warning: unused variable ‘x’ user.cpp: In function ‘int main()’: user.cpp:28: warning: unused variable ‘k’ user.cpp:34: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result user.cpp:31: warning: ‘h’ may be used uninitialized in this function