#include 
#include 
#include 
space(char s);
void main()
{
 char s;
 clrscr();
 printf("Enter string.");
 printf("
String will be terminated if you press Ctrl-Z.");
 printf("
STRING:- ");
 space(s);
 printf("
			HAVE A NICE DAY! BYE.");
 getch();
}
 space(char s)
 {
 int i;
 s=getchar();
 for (i=0;(s=getchar())!=EOF;i++)
 {
 if (s==' ')
 {
 printf("String contains a space character.");
 break;
 }
 }
 if (s==EOF)
 printf("String does not contain a space character.");
 return(s);
 }