Compilare: user.c: In function ‘main’: user.c:10:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&P); ^ user.c:14:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d ",&v1[i]);} ^ user.c:21:26: warning: ‘N’ may be used uninitialized in this function [-Wmaybe-uninitialized] v2[1]=(v1[1]+v1[2]-v1[N])/2; ^