Compilare: user.cpp: In function ‘int main()’: user.cpp:11:20: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(prop>=65&&prop<=90 || prop>=97&&prop<=122) ^ user.cpp:13:31: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] while(prop>=65&&prop<=90 || prop>=97&&prop<=122) ^ user.cpp:8:9: warning: unused variable ‘i’ [-Wunused-variable] int i,n=1,s=0,c=0; ^ user.cpp:8:11: warning: unused variable ‘n’ [-Wunused-variable] int i,n=1,s=0,c=0; ^