(1)
i=1; k=0;
while(i<=n-1){
@ k += 10*i;
i++;
} (2)
i=1; k=0;
do {
@ k += 10*i;
i++;
} while(i<=n-1); (3)
i=1; k=0;
while (i<=n-1) {
i++;
@ k += 10*i;
} (4)
k=0;
for(i=1; i<=n; i++) {
for(j=i; j<=n; j++)
@ k++;
} (5)
for(i=1; i<=n; i++) {
for(j=1; j<=i; j++) {
for(k=1; k<=j; k++)
@ x += delta;
} (6)
i=1; j=0;
while(i+j<=n) {
@ if(i>j) j++;
else i++;
} (7)
x=n; y=0; // n是不小于1的常数
while(x>=(y+1)*(y+1)) {
@ y++;
} (8)
x=91; y=100;
while(y>0) {
@ if(x>100) { x -= 10; y--; }
else x++;
} 
(6) n
(7)
向下取整
(8) 1100