Compilare: main.c: In function 'main': main.c:10:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &n, &k ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:12:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &v[i] ); ^~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:39:3: warning: 'j3' may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf( fout, "%d %d %d", j3 + 1, j4, max ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~