Compilare: user.c: In function ‘main’: user.c:41:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d" ,&n,&m); ^ user.c:50:19: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d" ,&nr); ^ user.c: In function ‘addWidths’: user.c:21:13: warning: ‘k2’ may be used uninitialized in this function [-Wmaybe-uninitialized] int k=0,k2; ^