Compilare: user.c: In function ‘main’: user.c:28:5: warning: implicit declaration of function ‘qsort’ [-Wimplicit-function-declaration] qsort(&x[1], n, sizeof(int), cmp); ^ user.c:55:9: warning: suggest parentheses around ‘-’ inside ‘>>’ [-Wparentheses] b[i][i] = x[i]>>16 - 1; ^ user.c:22:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d\n", &n); ^ user.c:25:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", x+i); ^