Compilare: main.cpp: In function 'int main()': main.cpp:15:8: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if((y>='a' && y<='z') || (y>='A' && y<='Z')) ^~ main.cpp:17:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' y=a; ^