#include<stdio.h>

main()
{
int i, x;
i=10;/*gives the initial value for i*/

do   /*begins the loop*/
{    /*brackets form body of loop with C statements*/
x = i * i; /*formula for the square*/
printf("the square of %d = %d\n\n", i, x);/*prints the outcome and skips a line*/
i = i + 1;/*adds 1 to the last value of i so the next loop it will be a higher number*/
}
while(i<21);/*this is the test expression that ends the loop when the number reaches 20, by saying that i is always less than 21*/

return;
}