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POArduino - Comparing a split string with another string
 

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    <p>I'm trying to compare an exploded string to another string in Arduino, but it won't work. The string that is split is read from the serial port.</p> <p>First of all, these are the functions I use for exploding the string:</p> <pre><code>int count_delimiters(char str[], const char* delimiters) { int i, j, result = 0; for (i = 0; i &lt; strlen(str); ++i) { for (j = 0; j &lt; strlen(delimiters); ++j) { if (str[i] == delimiters[j]) { ++result; } } } return (result + 1); } char** split(char str[], const char* delimiters) { int result_size = count_delimiters(str, delimiters); int i = 0; char* result[result_size]; char* pch = strtok(str, ","); while (pch != NULL) { result[i] = pch; pch = strtok(NULL, ","); ++i; } return result; } </code></pre> <p>The part where I try to compare the exploded string to another string looks like this:</p> <pre><code>char input_array[input.length()]; input.toCharArray(input_array, (input.length() + 1)); exploded = split(input_array, ","); if ("$test" == exploded[0]) { Serial.println("match"); // This code is never reached. } </code></pre> <p>When I enter <strong>$test,other</strong> in the serial monitor I expect a match to be printed out but nothing is printed. If I do <code>Serial.println(exploded[0]);</code> it outputs <strong>$test</strong> as it should. What am I doing wrong?</p> <p>I've already tried to look for non-printable characters like <code>\r</code>, <code>\n</code> and <code>\0</code>, but it doesn't seem to contain any of these, because when I check for "$test\r" or the others it still doesn't return true.</p>
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