Eroare de compilare: main.cpp: In function 'int main()': main.cpp:21:9: error: reference to 'cin' is ambiguous cin >> l[i]; ^~~ main.cpp:5:10: note: candidates are: std::ifstream cin ifstream cin("texttrim.in"); ^~~ In file included from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:75:0, from main.cpp:1: /usr/include/c++/6/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^~~ main.cpp:22:5: error: reference to 'cin' is ambiguous cin >> s[0]; ^~~ main.cpp:5:10: note: candidates are: std::ifstream cin ifstream cin("texttrim.in"); ^~~ In file included from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:75:0, from main.cpp:1: /usr/include/c++/6/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^~~ main.cpp:24:5: error: reference to 'cin' is ambiguous cin.getline(s+1, 1000007); ^~~ main.cpp:5:10: note: candidates are: std::ifstream cin ifstream cin("texttrim.in"); ^~~ In file included from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:75:0, from main.cpp:1: /usr/include/c++/6/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^~~ main.cpp:28:5: error: reference to 'cin' is ambiguous cin >> w; ^~~ main.cpp:5:10: note: candidates are: std::ifstream cin ifstream cin("texttrim.in"); ^~~ In file included from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:75:0, from main.cpp:1: /usr/include/c++/6/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^~~ main.cpp:32:35: warning: NULL used in arithmetic [-Wpointer-arith] for(i = 0; sum < w && s[i] != NULL; i++) ^~~~ main.cpp:37:16: warning: NULL used in arithmetic [-Wpointer-arith] if(s[i] == NULL) Non zero exit status: 1