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error: expected unqualified-id before ‘.’ token

bubblesbubby (14)
i get an error at this line
rootset::generations.push_back(pmemSize/gen);


The structure is designed like this
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struct rootset {
  unsigned long totSize;
  unsigned long *rStrtPtr;
  unsigned long *rEndPtr;
  vector<unsigned long> physicalM;
 
  struct generations {
    unsigned long gtotSize;
    const char *genStrtPtr;
    const char *genEndPtr; 
    int numOfGen;
    string genName;
   
    struct object {
      unsigned long objSize;
      const char *objStrtPtr;
      const char *objEndPtr;
      string id;
      char markBit;
      char objPtr;
    };
      
    struct freeList {
      unsigned long freeSpace;
      int flNumb; 
    };
  };
};





Please do help me as to why it happens.
Thanks in advance for any replies.
bubblesbubby (14)
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This is my entire code:
#include <iostream>
#include <algorithm>
#include <string>
#include <iomanip>
#include <limits>
#include <stdio.h>
#include <sstream>
#include <vector>


using namespace std;
using std::stringstream;


string extract(string pMemx);//
unsigned long toMByte(int phyMemz, string valz);//
string commentIgnore( string& input);//
unsigned long toByte(int phyMemx, string valx);//

string pMem, comment, sGen, val,input,id,size,inits,incs;
int gen, phyMem, i=0, oBrckt=0, cBrckt=0, gBrckt=0, v1 =0, v2 =0, sizeint;
unsigned long pmemSize =0;
//int pmemSize =0;
char t[10], m[256],init[10],inc[10];


struct rootset {
  unsigned long totSize;
  unsigned long *rStrtPtr;
  unsigned long *rEndPtr;
  vector<unsigned long> physicalM;
 
  struct generations {
    unsigned long gtotSize;
    const char *genStrtPtr;
    const char *genEndPtr; 
    int numOfGen;
    string genName;
   
    struct object {
      unsigned long objSize;
      const char *objStrtPtr;
      const char *objEndPtr;
      string id;
      char markBit;
      char objPtr;
    };
      
    struct freeList {
      unsigned long freeSpace;
      int flNumb; 
    };
  };
};

int main()
{
  
  cin >> pmemSize>>gen;
    

  /*Assign the Physical memory allocated by user */
  
   vector<rootset> pRootSet;
 
   pRootSet.push_back(rootset());
    pRootSet[0].totSize = pmemSize;
    pRootSet[0].physicalM.reserve(pmemSize);
    for (int s=0; s<pmemSize; ++s)
      pRootSet[0].physicalM.push_back(s);

    pRootSet[0].rStrtPtr = &*(pRootSet[0].physicalM.begin());
    pRootSet[0].rEndPtr = &*(pRootSet[0].physicalM.end());
   
    vector<unsigned long>::iterator it;
    for(it = pRootSet[0].physicalM.begin(); it!= pRootSet[0].physicalM.end(); ++it) 
      cout <<"Printing it: " <<(*it)<<endl;

 
  
  /* Create the generations and their names -> gen*/
   vector <rootset::generations> generation;
  
   for( i=0; i<gen; i++) {
     
     stringstream out; 
     out << i;
     string s = out.str();
     generation.push_back(rootset::generations());
     rootset::generations.push_back(pmemSize/gen);
     generation[i].genName = "generation" + s;
     generation[i].gtotSize = pmemSize/gen;
     
     cout<<"gen size: "<<generation[i].gtotSize<<endl;
 }
  
 
  
    }
Last edited on
Daleth (1030)
Your generations struct is not static, so you cannot call it specifically out of the rootset struct. Otherwise, you need to call generations via object and the operator.(period) .

Edit:
I'm dumb. I forgot to mention that you are trying to use a struct as is without having created an object first.
Last edited on
bubblesbubby (14)
hmmmmm
Last edited on
bubblesbubby (14)
I need to create objects dynamically as the user enters the number of generations. So based on that number, the number of generations is created.
Daleth (1030)
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rootset::generations AnObject;
   AnObject.push_back(pmemSize/gen); //Have you declared and defined this function?

An example from the STL
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   Nested iterator classes within the container class templates
std::vector<T>::iterator
std::list<T>::iterator
//etc...


Static stuff: (you can ignore this)
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struct rootset{
   static int myvar;
};
//...
int main(){
   rootset::myvar = 5;
}
Last edited on
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