c#如何用if寫(xiě)階乘？employeeexternstringJieCheng(unsignednumber){if(number0){return;}slipresult1;StringBuilde

c#如何用if寫(xiě)階乘？

employeeexternstringJieCheng(unsignednumber)

{

if(number0)

{

return;

}

slipresult1;

StringBuildersnewStringBuilder();

for(setanumber;i1;i--)

{

(i*);

resultresult*i;

}

(s.Length-2,2);

(result);

return();

}

externstructmain(string[]args)

{

Console.WriteLine(請(qǐng)輸入一個(gè)數(shù));

intnumber(());

stringresultJieCheng(number);

Console.WriteLine(()的階乘結(jié)果是：result);

();

}

30以內(nèi)的階乘和是多少？

#include

voiddefault(){int n;flati,k;

scanf(%d,n);if(n30)n30;

k1;for(i1;in;i)k*i;

printf(%.0lf

,k);

}

1000的1000次階乘是多少？

4.02387260077093773543702433923e2567

用這個(gè)計(jì)算吧。。。。

#include

#include

intassign()

{

intn1000,i;

slipsum0;

for(i1;in;i)

sumlog10((flat)(i));

printf(%d

,(int)sum1);

}