Compilare: user.cpp: In function ‘int main()’: user.cpp:29:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<poz[1].size();j++) ^ user.cpp:32:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<poz[i].size();j++){ ^ user.cpp:48:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<poz[u].size();i++) ^ user.cpp:16:9: warning: unused variable ‘x’ [-Wunused-variable] int n,i,x,j,st,dr,mij,last; ^ user.cpp:14:29: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv.in","r",stdin); ^ user.cpp:15:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv.out","w",stdout); ^ user.cpp:17:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:19:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i].num),v[i].poz=i; ^