Some experiments in string comparisons – which use ASCII order, not exactly alphabetical order.
// alpha-order.cpp
#include <iostream>
#include <algorithm>
using namespace std;
int main()
{
string s1, s2, l1, l2;
cout << "Enter one word: ";
getline(cin, s1);
cout << "Enter another word: ";
getline(cin, s2);
l1 = s1;
l2 = s2; // lower-case versions
transform(l1.begin(), l1.end(),
l1.begin(), ::tolower);
transform(l2.begin(), l2.end(),
l2.begin(), ::tolower);
cout << "Alphabetical order:" << endl;
if(l1 < l2) // compare the lower-case versions
{
cout << s1 << endl << s2 << endl;
}
else
{
cout << s2 << endl << s1 << endl;
}
return 0;
}
Range-checking using Booleans. Remember DeMorgan’s Laws! The opposite of >
is <=
.
#include <iostream>
using namespace std;
int main()
{
int number;
cout << "Enter a number (1-10): ";
cin >> number;
if(number >= 1 && number <= 10) {
cout << "GOOD" << endl;
}
else {
cout << "BAD\n";
}
return 0;
}