void main()

{ int a，b，c，x，y； /* Define 4 variables */

scanf("%d "，& ampx)； /* Enter a three-digit x */

a = x/ 100； /* Calculate one percent of x */

b =(x-a * 100)/ 10； /* Calculate the ten digits of x */

c = x % 10； /* Calculate the single digits of x */

y = c * 100+b * 10+a； /* Calculate the reciprocal */

printf("%d\n "，y)； /* Output the inverse number y */

getch()；

Returns 0;

}

My college homework, don't worry that A, B and C are not integers, because I define them as plastic. .