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    <p>Pseudo-Code:</p> <blockquote> <p>Step 1: Scan forward until the first "\", note the index.</p> <p>Step 2: Scan Backward from the end to the last "\" (the first "\" encountered when going backwards), note the index.</p> <p>Step 3: StrCpy the relevant pieces out into 3 strings.</p> </blockquote> <p>Code: (does not rely on strrchr, or other methods you seem to have issues with)</p> <pre><code>void ParseRegEntry(char* regKey, char** TopLevel, char** Path, char** Key); int main(void) { char* regKey = "HKEY_CURRENT_USER\\Software\\MyProgram\\SomeOtherValue\\SomeKey"; char* TopLevel; char* Path; char* Key; ParseRegEntry(regKey, &amp;TopLevel, &amp;Path, &amp;Key); printf("1: %s\n2: %s\n3: %s\n", TopLevel, Path, Key); free(TopLevel); free(Path); free(Key); return 0; } void ParseRegEntry(char* regKey, char** TopLevel, char** Path, char** Key) { int firstDelimiter = 0; int lastDelimiter = strlen(regKey)-1; int keyLen; while(regKey[firstDelimiter] != '\\') { firstDelimiter++; } while(regKey[lastDelimiter] != '\\') { lastDelimiter--; } keyLen = strlen(regKey) - lastDelimiter-1; *TopLevel = (char*)malloc(firstDelimiter+1); strncpy(*TopLevel, regKey, firstDelimiter); (*TopLevel)[firstDelimiter] = '\0'; *Path = (char*)malloc(lastDelimiter - firstDelimiter+2); strncpy(*Path, regKey+firstDelimiter, lastDelimiter - firstDelimiter); (*Path)[lastDelimiter-firstDelimiter] = '\0'; *Key = (char*)malloc(keyLen+1); strncpy(*Key, regKey+lastDelimiter+1, keyLen); (*Key)[keyLen] = '\0'; } </code></pre>
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    1. POParsing a string with tokens for the first and last words (in C)
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    1. COThank you. works very smoothly.
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    2. CONote that in a rush to get the code out, I didn't completely test the boundaries. I recommend you recheck all my math (+1 here... -1 there... +2 in another spot). Validate your input, and prepare for the possibility that regKey is bad input, malloc fails, or other errors happen.
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