Compilare: main.cpp: In function 'int main()': main.cpp:11:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<=strlen(s);i++) ~^~~~~~~~~~~ main.cpp:11:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=0;i<=strlen(s);i++) ^~~ main.cpp:17:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' cout<<s; ^~~~