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POHow to work with pointer to pointer to a struct?
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copied!<p>I have a bit of a problem. I am barely starting out with C, (comming from a C# background) and I am having problem with double pointers.</p> <p>I have a structure as follows:</p> <pre><code>#ifndef __PROCESSINFO_H #define __PROCESSINFO_H struct ProcessInfo { int ProcesId; int Priority; int ExecutionTime; int EllapsedTime; char* ProcessName; }; struct ProcessInfo *ProcessInfo_Allocate(int processId, char *processName, int priority, int executionTime); void ProcessInfo_ToString(struct ProcessInfo *processInfo); void ProcessInfo_Dispose(struct ProcessInfo *processInfo); #endif </code></pre> <p><strong>Implementation:</strong></p> <pre><code>#include <stdio.h> #include <stdlib.h> #include <string.h> #include <ctype.h> #include "processinfo.h" struct ProcessInfo *ProcessInfo_Allocate(int processId, char *processName, int priority, int executionTime) { struct ProcessInfo *processInfo; processInfo = (struct ProcessInfo *)malloc(sizeof(struct ProcessInfo)); processInfo->ProcessId = processId; processInfo->ProcessName = processName; processInfo->Priority = priority; processInfo->ExecutionTime = executionTime; processInfo->EllapsedTime = 0; return processInfo; } void ProcessInfo_ToString(struct ProcessInfo *processInfo) { printf(" %6i %6i %10i %10i, %25s", processInfo->ProcessId, processInfo->Priority, processInfo->ExecutionTime, processInfo->EllapsedTime, processInfo->ProcessName); } void ProcessInfo_Dispose(struct ProcessInfo *processInfo) { if(processInfo != NULL) { if(processInfo->ProcessName != NULL) { free(processInfo->ProcessName); } free(processInfo); } } </code></pre> <p>so now I have to manage a whole lot of ProcessInfo instances. I wrote another structure which would hold a pointer to a pointer to the ProcessInfo sturcture because i thought that I can increase and decrease it in size as needed (without too much hassle);</p> <pre><code>#ifndef __SCHEDULER_H #define __SCHEDULER_H struct Scheduler { struct ProcessInfo** Processes; }; struct Scheduler* Scheduler_Allocate(void); #endif </code></pre> <p>So the question is how do I initialize the **Processes member inside the <code>Scheduler_Allocate</code> method? How do I add stuff to it?</p>

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