Reverse a String in C++
By: Grant Braught in C++ Tutorials on 2011-01-27
This sample C++ program reverses a String and at the same time demonstrates the Pass by Reference parameters in C++ functions.
#include <iostream.h>
// Function prototypes...
void Reverse(string &theWord);
int main(void)
{
string MyWord;
cout << "Enter a word to be reversed: ";
cin >> MyWord;
cout << "Before Reverse:" << endl;
cout << " MyWord = " << MyWord << endl << endl;
Reverse(MyWord);
cout << "After Reverse:" << endl;
cout << " MyWord = " << MyWord << endl << endl;
return(0);
}
void Reverse(string &theWord)
{ // Reverse the string contained in theWord.
int i;
char temp;
for (i=0; i<theWord.length()/2; i++)
{
temp = theWord[i];
theWord[i] = theWord[theWord.length()-i-1];
theWord[theWord.length()-i-1] = temp;
}
}
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