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Why doesn't this return true?

Apr 18, 2012 at 10:44pm
CJC0117 (97)
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#include <iostream>

using namespace std;

int main()
{
    char word1[]="hello",word2[]="hello"
    if(word1==word2)
        cout<<"word1 equals word2";
    else
        cout<<"word1 does not equal word2";
}
Edit & run on cpp.sh


The output is "word1 does not equal word2". Is this because the if statement is checking to see if the addresses of the arrays are equal, and not the actual content of the arrays?
Apr 18, 2012 at 10:53pm
Maese909 (131)
Yes, the value of word1 and word2 are memory addresses. Try this instead:

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#include <iostream>
#include <cstring>

using namespace std;

int main()
{
    char word1[] = "hello";
    char word2[] = "hello";

    if(!strcmp(word1, word2))
        cout << "word1 equals word2";
    else
        cout << "word1 does not equal word2";
		
    return 0;
}
Edit & run on cpp.sh


strcmp returns 0 if two cstrings are equal.
Last edited on Apr 18, 2012 at 10:55pm
Apr 18, 2012 at 10:56pm
CJC0117 (97)
Okay, thanks for clearing that up.
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