Compilare: user.cpp: In function ‘void folder()’: user.cpp:23:20: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] while(s[p]>='A'&&s[p]<='Z'||s[p]>='0'&&s[p]<='9') ^ user.cpp: In function ‘void fisier()’: user.cpp:41:20: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] while(s[p]>='a'&& s[p]<='z'|| s[p]>='0'&& s[p]<='9') { ^ user.cpp: In function ‘int main()’: user.cpp:50:9: warning: unused variable ‘len’ [-Wunused-variable] int len=strlen(s); ^