Compilare: user.cpp: In function ‘int main()’: user.cpp:35:26: warning: operation on ‘i’ may be undefined [-Wsequence-point] w[i++]=v[i--]; ^ user.cpp:11:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d", &n); ^ user.cpp:35:25: warning: array subscript is above array bounds [-Warray-bounds] w[i++]=v[i--]; ^