Андрей

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

int main() {
	char phone[100];
	char *d[100];
	int i = 0;

	scanf("%[^\n]", phone);
	while (d[i++] = strtok(!i ? phone : NULL, " "));
	i = -1;
	while (d[++i]) {
		if (!(i & 1))
			printf("%s ", d[i]);
	}
	return 0;
}