Directory Path Parsing

Input: "C:\\a\\b\\c\\..\\.\\..\\g\\."
Output: "C:\\a\\g"

#include<iostream>
#include<string.h>
#include<signal.h>
using namespace std;
int main()
{
 void fun();
 char A[100]="C:\\a\\b\\c\\..\\.\\..\\g\\.\\..";
 //char A[100]="C:\\a\\b";
 char B[100]="";
 char temp[100]="";
 int top=-1;
 char C[20][100];
 int i=0;
 while(i<strlen(A) && A[i]!='\\')
 {
  B[i]=A[i];
  i++;
 }
 B[i]=0;
 while(i<strlen(A))
 {
  int j=0;
  while(i<strlen(A) && A[i]!='\\')
  {
   temp[j]=A[i];
   i++;
   j++;
  }
  temp[j]=0;
  if(top>=0 && strcmp(temp,"..")==0)
  {
   top--;
  }
  else if(strcmp(temp,".")==0)
  {
  }
  else
  {
   top++;
   strcpy(C[top],temp);
  }
  i++;
 }
 for(int j=0;j<=top;j++)
 {
  strcat(B,C[j]);
  strcat(B,"\\");
 }
 cout<<B<<endl;
}