Compilare: user.cpp: In function ‘int main()’: user.cpp:20:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(s.size()>mx) ^ user.cpp:25:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(s.size()==mx) ^ user.cpp:56:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(j2<y.size()) ^ user.cpp:58:57: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(x[i2]!=y[j2] && i2<x.size()) ^ user.cpp:60:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i2==x.size() && j2<y.size()-1) ^ user.cpp:60:56: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i2==x.size() && j2<y.size()-1) ^ user.cpp:67:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j2==y.size()) ^ user.cpp:76:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i2<x.size()) ^ user.cpp:78:57: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(y[j2]!=x[i2] && j2<y.size()) ^ user.cpp:80:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j2==y.size() && i2<x.size()-1) ^ user.cpp:80:56: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j2==y.size() && i2<x.size()-1) ^ user.cpp:87:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i2==x.size()) ^