Compilare: user.cpp: In function ‘int main()’: user.cpp:10:15: warning: unused variable ‘out’ [-Wunused-variable] FILE *in,*out; ^ user.cpp:15:62: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (in, "%d%d%d%d%d%d", &n, &m, &x, &y, &newx, &newy); ^ user.cpp:105:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("memcpy.out","w",stdout); ^