Shoutbox

quote:

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Originally posted by Verte
[recently a friend couldn't work out how to convert a string to an integer- turns out you can subtract zero to do this. Just too strange].

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That would be subtracting the character '0'. That's possible in C/C++ as well.

For example:

code:

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int atoi(const char * pstr) {
    int i;
    int nRet = 0;
    for (i = 0; ; i++) {
        if (pstr[i]==0)
            break;
        if (pstr[i]>='0' && pstr[i]<='9') {
            nRet*=10;
            nRet+=pstr[i]-'0';
        }
        else return 0;
    }
    return nRet;
}

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