Compilare: user.cpp: In function ‘int main()’: user.cpp:31:28: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(X, sizeof(X), stdin); ^ user.cpp:32:31: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(Y, sizeof(Y), stdin); ^