Compilare: user.c: In function ‘main’: user.c:16:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d" ,&n,&m); ^ user.c:19:18: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d" ,&mat[i][j]); ^ user.c:36:12: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(fout,"%d %d %d" ,max1,p/1000,p%1000); ^