/* 
 * Example of using strncpy and strcpy functions 
 *
 * Displays each elemental component, identified by an initial capital letter.
 */

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

#define NSIZE 30  

int
main()
{
    char compound[NSIZE], elem[NSIZE];     
    int  first, next;

    printf("Enter a compound, such as H2Co > ");
    gets(compound);   // scanf("%s", compound);

    first = 0;
    for (next = 1;  next < strlen(compound);  ++next)
	if (compound[next] >= 'A'  &&  compound[next] <= 'Z') {
	   strncpy(elem, &compound[first], next - first);
	   elem[next - first] = '\0';
           printf("%s\n", elem);
           first = next;
	}

    printf("%s\n", strcpy(elem, &compound[first]));  // last component

    return (0);
}