Eroare de compilare: main.cpp:9:5: error: 'int index' redeclared as different kind of symbol int index, contor, ans, contor2; ^~~~~ In file included from /usr/include/c++/6/cstring:42:0, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:48, from main.cpp:1: /usr/include/string.h:477:1: note: previous declaration 'const char* index(const char*, int)' index (const char *__s, int __c) __THROW ^~~~~ main.cpp: In function 'int main()': main.cpp:21:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < m0.size(); ++i) ~~^~~~~~~~~~~ main.cpp:25:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < m0.size(); ++i) ~~^~~~~~~~~~~ main.cpp:48:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < m.size(); ++i) ~~^~~~~~~~~~ main.cpp:57:29: error: overloaded function with no contextual type information index = contor; ^~~~~~ main.cpp:70:21: error: overloaded function with no contextual type information index = contor; ^~~~~~ Non zero exit status: 1