Compilare: user.cpp: In function ‘void euler(int, int, bool)’: user.cpp:37:15: warning: unused variable ‘y’ [-Wunused-variable] int m, p, y; ^ user.cpp: In function ‘int main()’: user.cpp:57:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (in, "%d", &n); ^ user.cpp:61:46: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (in, "%d%d", &v[i].x, &v[i].y); ^