delete extra spaces

#include<stdio.h>
#include<iostream.h>
#include<conio.h>
#include<string.h>
void main ()
{clrscr();
 cout<<"please enter a string with extra spaces : " ;
 char a[100] ;
 gets(a);
 int h = strlen(a);
 for(int i = 1 ; i <strlen(a);i++)
 { if(a[i+1] == ' ')
    if(a[i] == ' ')
     a[i] = '\n';
     }
    cout<<endl<<"the corrected statement is : ";
 for(int j = 0 ;j< h;j++)
  if(a[j] != '\n')
   cout<<a[j];
   getch();
}