Compilare: user.c: In function ‘main’: user.c:12:5: warning: overflow in implicit constant conversion [-Woverflow] short int m,n,i,j,max = -999999,c1,c2,u,r = 0; ^ user.c:13:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%hd %hd",&m,&n); ^ user.c:18:19: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%hd",&a[i][j]); ^