Compilare: user.c: In function ‘main’: user.c:13:13: warning: too many arguments for format [-Wformat-extra-args] fprintf(fout, "%d %d\n", i, x, i-x); ^ user.c:16:13: warning: too many arguments for format [-Wformat-extra-args] fprintf(fout, "%d %d\n", i, x, i-x); ^ user.c:25:13: warning: too many arguments for format [-Wformat-extra-args] fprintf(fout, "%d %d\n", i, x, i-x); ^ user.c:28:13: warning: too many arguments for format [-Wformat-extra-args] fprintf(fout, "%d %d\n", i, x, i-x); ^ user.c:8:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^