myString = "Welcome" myString = "Welcome to" myString = myString // "Fortran World" print*, myString, len(myString) 效率考量 虽然可变大小数组和可变长度字符串极大提升了程序设计的灵活性,特别是在处理未知长度数据时表现突出,但这种灵活性并非免费午餐,它们相较于静态大小的数组和字符串通常会消耗更多...
...在Python中将字符串转换为整数的错误方法 (The Wrong Way to Convert a String to an Integer in Python) Programmers coming...在Python中将字符串转换为整数的正确方法 (The Correct Way to Convert a String to an Integer in Python ) Here's a simple ...
subroutine fortran_to_c(strings, num_strings, string_length) implicit none character(len=*), intent(in) :: strings(:) integer, intent(in) :: num_strings, string_length integer :: i do i = 1, num_strings call c_function(strings(i), string_length) end do end subroutine C代码(示...
: name you want to this string (like sprintf in C), and use the string. : character(len=12)::fname : integer::i : do i=0,9999,1 : write(unit=fname,fmt="('file',i4.4,'.dat')")i ! like sprintf() in C : open(unit=10,file=fname) : ... : close(unit=10) : end ...
call getarg(i,charstring) 读取命令行的第i个参数,并将其存储到charstring中,其中命令本身是第0个参数 1Example:2! procedure has2arguments, oneisinput file, otherisoutput file3PROGRAM MAIN4IMPLICIT NONE5INTEGER argc6character*60FILEIN,FILEOUT78IF(nargin==0) THEN9FILEIN ='FILE.IN'!default10ELSE...
(4habcd, ’abcdefg’) end subroutine z(i, s) integer i character *(*) s print *, "string length = ", len(s) return end demo% f95 -o has0 hasc.f demo% has0 string length = 4 <-- 应为 7 demo% f95 -o has1 -xhasc=no hasc.f demo% has1 string length = 7 <-- ...
integer:: totalreal:: averagecomplex:: cxlogical:: donecharacter(len =80) :: message! a string of 80 characters 稍后您可以为这些变量赋值,例如, total=20000average=1666.67done= .true.message= “A big Hello from IOWIKI”cx= (3.0,5.0) ! cx =3.0+5.0i ...
INTEGER::ierror OPEN(UNIT=8,FILE='example.dat',STATUS='OLD',ACTION='READ',IOSTAT=ierror,IOMSG=err_string) 2. 打开文件进行输出 INTEGER::ierror,unit CHARACTER::err_string,filename unit=25 filename='OUTCAR' OPEN(UNIT=unit,FILE=filename,STATUS="NEW",ACTION='WRITE',IOSTAT=ierror,IOMSG=...
’Input string ’, string, ’ becomes: ’, value print *, ’Value of 1e300 * 1e10 is:’, 1e300 * 1e10 i = ieee_flags(’clear’, ’exception’, ’all’, out) end integer function exception_handler(sig, code, sigcontext) integer sig, code, sigcontext(5) print *, ’*** IEEE...
integer::a=1,b=2 character(len=20)::string write(unit=string,fmt="(I2,'+',I2,'=',I2)")a,b,a+b write(*,*)string 则结果输出1+2=3。 反过来也是可以的: integer a character(len=20)::string="123" read(string,*)a write(*,*)a 则输出123。