Compilare: user.cpp: In function ‘int main()’: user.cpp:54:24: warning: variable ‘sizeQ2’ set but not used [-Wunused-but-set-variable] int H,i,j,d,x,y,xn,yn,sizeQ2; ^ user.cpp:59:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&M,&N); ^ user.cpp:62:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&A[i][j]); ^