Compilare: user.cpp: In function ‘int main()’: user.cpp:12:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<=strlen(s)-1;i++) ^ user.cpp:14:40: warning: comparisons like ‘X<=Y<=Z’ do not have their mathematical meaning [-Wparentheses] if((s[i]==' '||s[i]=='-')&&('a'<=s[i+1]<='z'||'A'<=s[i+1]<='Z'))nr++; ^ user.cpp:14:58: warning: comparisons like ‘X<=Y<=Z’ do not have their mathematical meaning [-Wparentheses] if((s[i]==' '||s[i]=='-')&&('a'<=s[i+1]<='z'||'A'<=s[i+1]<='Z'))nr++; ^