Compilare: user.cpp: In function ‘int main()’: user.cpp:13:19: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(*a>='A'&&*a<='Z'||*a>='a'&&*a<='z'||*a>='0'&&*a<='9') ^ user.cpp:13:55: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(*a>='A'&&*a<='Z'||*a>='a'&&*a<='z'||*a>='0'&&*a<='9') ^ user.cpp:16:26: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] for(;(*a>='A'&&*a<='Z'||*a>='a'&&*a<='z'||*a>='0'&&*a<='9')||*a=='-';a++) ^ user.cpp:16:62: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] for(;(*a>='A'&&*a<='Z'||*a>='a'&&*a<='z'||*a>='0'&&*a<='9')||*a=='-';a++) ^