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copied!<p>OK.. with few modification to your code, I was able to (link and) compile your code.. The files are as follows:</p> <p>Filename: TestCmp.c</p> <pre><code>#include <stdlib.h> #include <stdio.h> #include <assert.h> #include <limits.h> #include "LZWCmp.h" //#include "SmartAlloc.h" #include "MyLib.h" /*function pointer to the CodeSink function in TestCmp, which function simply prints each 4-byte uint sent to it as 8 hex digits. It does so 8 integers per line, with one space between each pair of integers, and no space after the final integer, just an EOL.*/ void sink(void *pointer, uint code) { printf("%08X ", code); } int main(void) { int numCodes; /*Number of codes that compressor starts with understanding*/ LZWCmp *cmp = malloc(sizeof(struct LZWCmp)); /*allocate memory for compressor state*/ CodeSink ptr = sink; /*set sodesink pointer to sink function*/ uchar letter; /*letter for intake and compression*/ printf("Enter symbol count: "); scanf(" %d", &numCodes); while(letter != '\n') { letter = getchar(); } LZWCmpInit(cmp, numCodes, ptr, NULL); /*Initialize compressor */ while(letter < UCHAR_MAX) { letter = getchar(); LZWCmpEncode(cmp, letter); /*Send letter to encoder*/ /*FIRST FUNCTION TO NOT WORK*/ } LZWCmpStop(cmp); /*Finish program when finding EOF character*/ LZWCmpDestruct(cmp); /*Free memory space*/ return 0; } </code></pre> <p>Filename: MyLib.h</p> <pre><code>#ifndef MYLIB_H #define MYLIB_H #define BITS_PER_BYTE 8 typedef unsigned char uchar; typedef unsigned long ulong; typedef unsigned int uint; typedef unsigned short ushort; #ifdef LITTLE_ENDIAN #define UShortEndianXfer(val) ((val) >> 8 | (val) << 8} #else #define UShortEndianXfer(val) (val) #endif #endif </code></pre> <p>Filename: LZWCmp.h</p> <pre><code>#ifndef LZW_H #define LZW_H #include <stdio.h> #include "MyLib.h" #define RECYCLE_CODE 4096 // Recycle dictionary rather than add this code /* Function pointer to method to call when a code is completed and ready for * transmission or whatever. The void * parameter can point to anything, * and gives hidden information to the function so that it can know what * file, socket, etc. the code is going to. The uint is the next 32 bits * worth of compressed output. */ typedef void (*CodeSink)(void *, uint code); /* One node in a trie representing the current dictionary. Use symbols * to traverse the trie until reaching a point where the link for a * symbol is null. Use the code for the prior link, and add a new code in * this case. Each node has as many links and codes as there are symbols */ typedef struct TrieNode { ushort *codes; struct TrieNode **links; } TrieNode; /* Current state of the LZW compressor. */ typedef struct LZWCmp { TrieNode *head; /* Head pointer to first TrieNode */ CodeSink sink; /* Code sink to send bits to */ void *sinkState; /* Unknown object to send to sink for state */ int numSyms; /* Symbol count, also size of TrieNodes */ int nextCode; /* Next code to be assigned */ int numBits; /* Number of bits per code currently */ uint nextInt; /* Partially-assembled next int of output */ int bitsUsed; /* Number of valid bits in top portion of nextInt */ TrieNode *curLoc; /* Current position in trie */ short lastSym; /* Most recent symbol encoded */ } LZWCmp; /* Initialize a LZWCmp given the number of symbols and the CodeSink * to which to send completed codes; */ void LZWCmpInit(LZWCmp *cmp, int numSyms, CodeSink sink, void *sinkState); /* Encode "sym" using LZWCmp. Zero or more calls of the code sink * may result */ void LZWCmpEncode(LZWCmp *cmp, uchar sym); /* Mark end of encoding (send next code value to code sink) */ void LZWCmpStop(LZWCmp *cmp); /* Free all storage associated with LZWCmp (not the sinkState, though, * which is "owned" by the caller */ void LZWCmpDestruct(LZWCmp *cmp); #endif </code></pre> <p>Filename: LZWCmp.c (this is what I've introduced which will be passed to the make command - see below)</p> <pre><code>#include "LZWCmp.h" void LZWCmpInit(LZWCmp *cmp, int numSyms, CodeSink sink, void *sinkState) { printf("LZWCmpInit \n"); } void LZWCmpEncode(LZWCmp *cmp, uchar sym) { printf("LZWCmpEncode \n"); } void LZWCmpStop(LZWCmp *cmp) { printf("LZWCmpStop \n"); } void LZWCmpDestruct(LZWCmp *cmp) { printf("LZWCmpDestruct \n"); } </code></pre> <p>Make command:</p> <pre><code>gcc -Wall TestCmp.c LZWCmp.h MyLib.h LZWCmp.c </code></pre> <p>Hope this helps!</p>

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