Compilare: main.cpp: In function 'int main()': main.cpp:19:1: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(s!=P) ^~ main.cpp:21:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' return 0; ^~~~~~ main.cpp:19:1: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized] if(s!=P) ^~