Some topics in C # written examination (collection)

. NET face Test 1

1. Narcissus number

Three-bit positive integer, 153=1~3 + 5~3+3~3

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

{

Int bai = 0;

Int shi = 0;

Int GE = 0;

Int Baiyushu = 0;

bai=i/100;

baiyushu=i%100;

Shi = BAIYUSHU/10;

GE = baiyushu% 10;

if (i== Bai*bai*bai + shi*shi*shi+ge*ge*ge)

{

Response.Write ("Narcissus number:" +i+ "<br>");

}

}

2. Fibonacci Series::: Recursive

1,1,2,3,5,8,13,21,..........

private int Fun_feibo (int intn)

{

int intresult = 0;

if (intn==1)

{

Intresult = 1;

}

Else

{

if (intn==2)

{

Intresult = 1;

}

Else

{

We need recursion here.

Intresult = Fun_feibo (intN-2) +fun_feibo (intN-1);

}

}

return intresult;

}

3. What is a delegate in C #. An event is not a delegate.

Commissioned, as the name suggests, is the middle agent of the meaning.

[One method can be used as a parameter into another method]

A delegate can be understood to point to a reference to a function, "pointer to function"

Yes, it's a special kind of delegation.

1. Declaration of Commission

delegate void (int,string) delename (parameter list);

2. Declaration method

Modifier return type method name (argument list)

//         {