Compilare: main.c: In function 'main': main.c:19:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n); ^~~~~~~~~~~~~~~~~~~~ main.c:21:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &v[i]); ^~~~~~~~~~~~~~~~~~~~~~~ main.c:16:37: warning: 'p' may be used uninitialized in this function [-Wmaybe-uninitialized] int n, i, max, s, sum, j, maxx, p, summ, j2; ^