Compilare: main.cpp: In function 'int main()': main.cpp:38:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(strlen(mat[i])>mx) ~~~~~~~~~~~~~~^~~ main.cpp:43:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(strlen(mat[i])==mx) ~~~~~~~~~~~~~~^~~~ main.cpp:56:6: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=1;i<=n;i++) ^~~ main.cpp:63:7: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' g<<nr<<"\n"; ^