Write a program, input a four-digit plastic data, require one digit to be exchanged with one hundred digits, and exchange ten digits with one thousand digits to form a new number and then output it.
# Contains? & ltstdio.h & gt
int？ Mainly? ()
{int？ Party A and Party B;
scanf("%d "，& ampa)；
b = a/ 100+a % 100 * 100；
printf("%d\n "，b)；
Return? 0;
}