Compilare: user.cpp: In function ‘void secv()’: user.cpp:58:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<=v.size()-1;i++) ^ user.cpp:66:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==v.size()) break; ^ user.cpp: In function ‘int main()’: user.cpp:76:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("minim.in", "r", stdin); ^ user.cpp:77:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("minim.out", "w", stdout); ^ user.cpp:78:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:81:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x.x); ^