Compilare: user.cpp: In function ‘int main()’: user.cpp:155:12: warning: variable ‘in’ set but not used [-Wunused-but-set-variable] FILE * in, * out; ^ user.cpp:155:18: warning: variable ‘out’ set but not used [-Wunused-but-set-variable] FILE * in, * out; ^ user.cpp:159:94: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d%d%d%d%d%d%d%ld", &n, &t1, &t2, &s1, &s2, &s3, &s4, &r1, &r2, &r3, &r4, &k); ^ user.cpp:162:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x1, &x2); ^