Compilare: user.cpp: In function ‘int main()’: user.cpp:13:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<=strlen(sir)) ^ user.cpp:15:24: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(sir[i]>='A' && sir[i] <= 'Z' || sir[i] >= 'a' && sir[i] <= 'z') ^ user.cpp:21:44: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if((sir[i] == '-' &&(sir[i-1]>='A' && sir[i-1] <= 'Z' || sir[i-1] >= 'a' && sir[i-1] <= 'z'))) ^