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

void main()
{char *s,*t;
 int i=0,j=0;
 s=(char *)malloc (1000*sizeof(char));
 t=(char *)malloc (50*sizeof(char));
 gets(s);
 i=strlen(s)-1;
 while(i>=-1)
	{
	 if(s[i]!=' ' && i>=0)
		t[j++]=s[i--];
	 else {if(t[j-1]>=97 && t[j-1]<=122)
				t[j-1]-=32;
			 i--;
			 t[j]=0;
			 //printf("%s ",t);
			 strrev(t);
			 printf("%s ",t);
			 j=0;
			}
	}
}

here using pointers we can easily do the above..........


#include<stdio.h>
#include<conio.h>
#include<alloc.h>
void main()
{
char a[50],*ptr,*pointer;
int n,i,j,k;
printf("enter the string:");
gets(a);
for(i=0;a[i]!='\0';i++)
n++;
pointer=(char*)malloc((n+1)sizeof('2'));
j=0;
for(i=0;a[i]!='\0';)
{
 if(a[i]==' ')
 {
  *(pointer+(n-j-1))=a[i];
i++; j++;
 }
else
{
ptr=&a[i];
 for(k=0;a[i+1]!=' '&&a[i+1]!='\0';k++)
  i++;
 for(k=0;k<((&a[i]-ptr)+1);k++)
 {
  *(pointer+(n-j-1))=*(ptr+(&a[i]-ptr)-k);
j++;
 }
}
i++;
}
  *(pointer+(n+1))='\0';
for(i=0;i<n;i++)
printf("%c",*(pointer+i));
getch();
}



thank u