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836449366

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ÎҵijÌÐòÊǼÆËãÔ²ÖÜÂÊ£¬Ô­ÀíÊÇ£ºÔÚÒ»¸ö1*1µÄÕý·½Ðμ°ÆäÄÚÇÐÔ²£¨Ô²ÐÄΪ£¨0.5,0.5£©£©ÖУ¬Ëæ»úÊýxºÍËæ»úÊýy×é³ÉµÄµãλÓÚÕý·½ÐÎÄÚ£¬µ«ÒªÅжÏÕâ¸öµãÊÇ·ñÒ²ÔÚÔ²ÄÚ£¬µ±µãÊýºÜ¶àʱ£¬Ô²ÄڵĵãÊý³ýÒÔ×ÜÊýÔÙ³ËÒÔ4¾ÍµÈÓÚÔ²ÖÜÂÊÁË£¨¼´Ãæ»ýÖ®±È£©£¬ÎÒËù±àдµÄ³ÌÐòÈçÏ£º
program main
      implicit none
      integer*4 :: i,j,n,ii
      common i
      real*4 :: r
       call random_number(x)
       call random_number(y)
       real*4,dimension(i):: x,y
       r=sqrt((x-0.5)**2+(y-0.5)**2)
       ii=0
      do n=2,8,1
       i=10**n
       do j=1,i
       if ( r .le. 0.5 )   then
         ii=ii+1
       endif
      enddo
      enddo
      write(*,"(a,3F6.3)" "pai=",4*ii/i,x,y
      end
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fish.yfyh

Í­³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
6Â¥: Originally posted by 836449366 at 2013-12-13 21:01:02
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do 100 n=9,12,1
       num=10**(n)
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100   continue
       end
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pai=   3.141556501388550 0.10E+10£¨ÕýÈ·£©
pai=   3.14156 ...

ÒòΪfortranÀïÃæÕûÐÍĬÈÏÊǶÌÕûÐ͵Ä,¼´integerÒ²¾ÍÊÇinteger(kind=4)
ÊÔÊÔ¶¨ÒånumΪ³¤ÕûÐÍÊý integer(kind=8) :: num
7Â¥2013-12-13 22:10:55
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fish.yfyh

Í­³æ (СÓÐÃûÆø)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

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¸Ð¾õÄã´úÂëµÄ´íÎóÂù¶à£¬È»ºóÎÒ¸ÄдÁËһϡ£
      program main
      implicit none
      integer*4 :: num,i,j,ii
      real*4 :: r
      real*4,allocatable :: x(,y(
      
      num = 100000
      allocate(x(num))
      allocate(y(num))
      call random_seed()
      call random_number(x)
      call random_number(y)
      
      ii = 0
      do i = 1,num
          r = sqrt((x(i)-0.5)**2 + (y(i)-0.5)**2)
          if(r .le. 0.5) then
              ii = ii+1
          end if
      end do
      
      write(*,"(a,F6.3)" "pai=",4.0*ii/num
      
      deallocate(x,y)
      
      stop
      end program

» ±¾ÌûÒÑ»ñµÃµÄºì»¨£¨×îÐÂ10¶ä£©

2Â¥2013-12-12 20:30:56
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836449366

½ð³æ (СÓÐÃûÆø)

Ëͺ컨һ¶ä
ÒýÓûØÌû:
2Â¥: Originally posted by fish.yfyh at 2013-12-12 20:30:56
¸Ð¾õÄã´úÂëµÄ´íÎóÂù¶à£¬È»ºóÎÒ¸ÄдÁËһϡ£
      program main
      implicit none
      integer*4 :: num,i,j,ii
      real*4 :: r
      real*4,allocatable :: x(,y(
      
      num = 100000
...

·Ç³£¸ÐлÄãµÄ»Ø´ð£¬ÔËÐÐÒ²ÕýÈ·£¬µ«µ±ÎÒÔÚwriteºó¼ÓÒ»¸öÒ»¸ö±äÁ¿Êä³öʱ£¬¸ÄΪ
¡± write(*,"(a,F6.3,E10.2)" "pai=",4.0*ii/num,num ¡°£¬
ÕâÑùÊä³öµÄ½á¹ûΪ
" pai= 3.141  0.14E-39 "
ÕâÑùµÄÊä³öµÄ½á¹ûÊÇ´íÎóµÄ£¬numÊä³öµÄֵӦΪ1.00E+05
ÎÊÌâ³öÔÚÄÄ£¿Çó³æÓÑÔٴνâ»óÏ£¿
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3Â¥2013-12-13 11:05:12
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

fish.yfyh

Í­³æ (СÓÐÃûÆø)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï
836449366: ½ð±Ò+5, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, ·Ç³£¸Ðл 2013-12-13 15:05:24
ÒýÓûØÌû:
3Â¥: Originally posted by 836449366 at 2013-12-13 11:05:12
·Ç³£¸ÐлÄãµÄ»Ø´ð£¬ÔËÐÐÒ²ÕýÈ·£¬µ«µ±ÎÒÔÚwriteºó¼ÓÒ»¸öÒ»¸ö±äÁ¿Êä³öʱ£¬¸ÄΪ
¡± write(*,"(a,F6.3,E10.2)" "pai=",4.0*ii/num,num ¡°£¬
ÕâÑùÊä³öµÄ½á¹ûΪ
" pai= 3.141  0.14E-39 &q ...

ÒòΪnumÊÇÕûÊýѽ£¬E10.2ÊÇ¿ÆÑ§¼ÆÊý·¨µÄ¸¡µãÊý£¬ËùÒÔÕâÑù¾Í¿ÉÒÔÁË¡£
write(*,"(a,F6.3,E10.2)" ) "pai=",4.0*ii/num,num*1.0
4Â¥2013-12-13 11:21:49
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