Compilare: user.c: In function ‘main’: user.c:39:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ user.c:41:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &V[i]); ^ user.c:43:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &m); ^ user.c:45:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &type, &x); ^ user.c: In function ‘Upper_bound’: user.c:18:2: warning: ‘pos’ may be used uninitialized in this function [-Wmaybe-uninitialized] return pos; ^ user.c: In function ‘Lower_bound’: user.c:32:2: warning: ‘pos’ may be used uninitialized in this function [-Wmaybe-uninitialized] return pos; ^ user.c: In function ‘main’: user.c:58:11: warning: ‘pos’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(fout, "%d\n", pos + 1); ^ user.c:55:11: warning: ‘pos’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(fout, "%d\n", pos + 1); ^ user.c:48:9: warning: ‘pos’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (V[pos] != x) { ^