Thread: Handling Structure Pointers in Array

Hi All

I am creating program which will initialized structures for various record type and will call for N tables.

The structure will have info regarding the tables.

Since the init() function will called N times for N tables, so N structures will be created and I want them to store them in Array of structures.

The code is:

Code:

#include<stdio.h>
#include<conio.h>
#include <stddef.h>

char *colArr[]={"IDNAME","IDAGE"};
char *colType[]={"CHAR","INT"};



typedef struct
{
	char colName[10];
	char colType[10];
	char colLen[10];
} colInfo;

typedef struct
{
	char tableName[10];
	int colCount;
	colInfo *pCol;
} tableInfo;

tableInfo *tPtr[] = {0x00};
int fileCount = 0;

int init()
{
   tableInfo tInfo;
   
   int i; 
   memset(&tInfo,0x00,sizeof(tInfo));

   tInfo.pCol = (tableInfo *)malloc(sizeof(tableInfo) * 2);

   memcpy(tInfo.tableName,"IDTABLE",7);
   tInfo.colCount = 2;

   for (i = 0; i< tInfo.colCount ;i++)
   {
	   memcpy(tInfo.pCol[i].colName,colArr[i],6);
	   memcpy(tInfo.pCol[i].colType,colType[i],4);
	   memcpy(tInfo.pCol[i].colLen,"4",1);
   }

   printf("%s\n",tInfo.tableName);
   printf("%d\n",tInfo.colCount);
   for (i = 0; i < tInfo.colCount;i++)
   {
	   printf("%s\n",tInfo.pCol[i].colName);
	   printf("%s\n",tInfo.pCol[i].colType);
	   printf("%s\n",tInfo.pCol[i].colLen); 
   }

  // Here I need info  
    tPtr[fileCount] =&tInfo;
     fileCount++;
	 
   return 1;
}

tPtr[fileCount] =&tInfo;

The above is not working as when I memset, every thing vanish since second time call to memset delete everything.
Can any body help me in this regard so that I can store structures in array and values should not vanish.


Thanks
Nickman

Hi

The return values are working..

My concern is to save the values in arrays in a way that I can use them again.


NOTE: This code is called in single flow.Also please ignore libs and other points like casting,return values,free memory etc.
This is not complete code,can consider as pseduo.