#include<stdio.h>
#include<string.h>

void main()
{
    char kal[100];
    int n,index;
    printf("input sentences :");
    gets(kal);
    puts(kal);
    
    index=0;
    n=strlen(kal);
    for(int i=0;i<n;i++)
    {
        if((kal[i]==' ') || (i==n-1))
        {
            if (i==n-1)
            {
                i=i+1;
            }
            for(int j=i;j<index;j++)
            {
                printf("%c",kal[j]);
            }
            index=i;
            printf(" ");
        }
    }

}

#include<iostream>
#include<stdio.h>
#include<string.h>

using namespace std;

int main(){
    
    char kal[100];
    int n,index;
    printf("input sentences :");
    gets(kal);
    
    int i(0),j(0);
    char newkal[100];
    
    for (i=0;i<100;i++){
        if (kal[i] != ' '){
           newkal[j] = kal[i];
           j++;            
        }
    }
    
    puts(newkal);
    
system("pause");
return 0;
}

#include <stdio.h> /* printf(), gets() */

int main(void)
{
  char str[100];
  int  read  = 0; /* Index of the charcter we will be reading from the array  */
  int  write = 0; /* Index we will be writing the character to in the array   */

  printf("input sentences :");
  gets(str);

    /* Loop until we find a null terminator (0)                               */
  while(str[read])
  {
      /* Copy over each character until we get to a space. We increment read  *
       *   and write here, since we want to copy everything up to a space     */
    while(str[read] && str[read] != ' ')
      str[write++] = str[read++];

      /* We broke out if we found the null terminator, or a space. If a space *
       *   was found, we want to keep the first space.                        */
    if(str[read])
      str[write++] = str[read];

      /* Loop until we find something other then a space. We just increment   *
       *   read here, since we want to ignore the additional space characters.*/
    while(str[read] && str[read] == ' ')
      ++read;
  }

    /* Add the new null terminator                                            */
  str[write] = 0;

  printf("%s\n", str);

  return 0;
}