Compilare: user.cpp: In function ‘int main()’: user.cpp:16:32: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(c[i-1]>='A' && c[i-1]<='Z' || c[i-1]>='a' && c[i-1]<='z') ^ user.cpp:23:36: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(c[i-1]>='A' && c[i-1]<='Z' || c[i-1]>='a' && c[i-1]<='z') ^ user.cpp:26:24: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(c[i-1]>='A' && c[i-1]<='Z' || c[i-1]>='a' && c[i-1]<='z') ^ user.cpp:30:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v.size();++i) ^