Compilare: user.cpp: In function ‘int main()’: user.cpp:13:21: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] {if (c<='a' && c<='z' || c<='A'&&c<='Z') ^ user.cpp:16:21: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] {if (c<='a' && c<='z' || c<='A'&&c<='Z') ^ user.cpp:20:7: warning: ‘s’ is used uninitialized in this function [-Wuninitialized] g<<k/s; ^ user.cpp:17:12: warning: ‘k’ may be used uninitialized in this function [-Wmaybe-uninitialized] k++;} ^