Compilare: main.c: In function 'main': main.c:15:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &n, &p ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:18:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &v[i] ); ^~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:61:5: warning: 'poz' may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf( fout, "\n%d", poz + 1 ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~