Compilare: user.cpp: In function ‘int main()’: user.cpp:10:33: warning: unused variable ‘left’ [-Wunused-variable] int n, i, soli, solj, smin, left, right, s, vmax; ^ user.cpp:10:39: warning: unused variable ‘right’ [-Wunused-variable] int n, i, soli, solj, smin, left, right, s, vmax; ^ user.cpp:10:46: warning: unused variable ‘s’ [-Wunused-variable] int n, i, soli, solj, smin, left, right, s, vmax; ^ user.cpp:8:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv7.in", "r", stdin); ^ user.cpp:9:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv7.out", "w", stdout); ^ user.cpp:12:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:16:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &val[i]); ^