Compilare: user.cpp: In function ‘int calculare_factoriale()’: user.cpp:15:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:42:7: warning: unused variable ‘i’ [-Wunused-variable] int i, j; ^ user.cpp:42:10: warning: unused variable ‘j’ [-Wunused-variable] int i, j; ^ user.cpp:44:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &N, &K); ^