C#用switch編程 計算1000以內的水仙花數 abc = a^3 + b^3 + c^3

for (i = 100; i < 1000; i++) {

int a, b, c;

a = i % 10;

b = i / 10 % 10;

c = i / 100;

if (a * a * a + b * b * b + c * c * c == i) {

System.out.print(i + ",");

}

}

System.out.println();

i = 100;

while (i < 1000) {

int a, b, c;

a = i % 10;

b = i / 10 % 10;

c = i / 100;

if (a * a * a + b * b * b + c * c * c == i) {

System.out.print(i + ",");

}

i++;

}

System.out.println();

i=100;

do{

int a, b, c;

a = i % 10;

b = i / 10 % 10;

c = i / 100;

if (a * a * a + b * b * b + c * c * c == i) {

System.out.print(i + ",");

}

i++;

}while(i<1000);

int[] a = new int[900];

for(i=1;i<900;i++)

{

a[i] = i+100;

}

foreach(int i = 100 in a)

{

int a, b, c;

a = i % 10;

b = i / 10 % 10;

c = i / 100;

if (a * a * a + b * b * b + c * c * c == i) {

System.out.print(i + ",");

}

}