|  |  5.1.46 fprintf Procedure from librarystandard.lib(see  standard_lib).
 
Example:Syntax:
fprintf (link_expression,string_expression[,any_expressions] )
Return:
none
Purpose:
fprintf(l,fmt,...);performs output formatting.
The second argument is a format control string. Additional
arguments may be required, depending on the content of the
control string. A series of output characters is generated as
directed by the control string; these characters are
written to the link l.
The control stringfmtis simply text to be copied, except
that the string may contain conversion specifications.Type
 help print;for a listing of valid conversion
specifications. As an addition to the conversions ofprint,
the%nand%2conversion specification does not
consume an additional argument, but simply generates a newline
character.
Note:
If one of the additional arguments is a list, then it should be
enclosed once more into a list()command, since passing
a list as an argument flattens the list by one level.
 See also:
 print;
 printf;
 sprintf;
 string.|  |   ring r=0,(x,y,z),dp;
module m=[1,y],[0,x+z];
intmat M=betti(mres(m,0));
list l=r,m,M;
link li="";   // link to stdout
fprintf(li,"s:%s,l:%l",1,2);
==> s:1,l:int(2)
fprintf(li,"s:%s",l);
==> s:(QQ),(x,y,z),(dp(3),C)
fprintf(li,"s:%s",list(l));
==> s:(QQ),(x,y,z),(dp(3),C),y*gen(2)+gen(1),x*gen(2)+z*gen(2),1,1 
fprintf(li,"2l:%2l",list(l));
==> 2l:list("(QQ),(x,y,z),(dp(3),C)",
==> module(y*gen(2)+gen(1),
==> x*gen(2)+z*gen(2)),
==> intmat(intvec(1,1 ),1,2))
==> 
fprintf(li,"%p",list(l));
==> [1]:
==>    // coefficients: QQ
==> // number of vars : 3
==> //        block   1 : ordering dp
==> //                  : names    x y z
==> //        block   2 : ordering C
==> [2]:
==>    _[1]=y*gen(2)+gen(1)
==>    _[2]=x*gen(2)+z*gen(2)
==> [3]:
==>    1,1 
fprintf(li,"%;",list(l));
==> [1]:
==>    // coefficients: QQ
==> // number of vars : 3
==> //        block   1 : ordering dp
==> //                  : names    x y z
==> //        block   2 : ordering C
==> [2]:
==>    _[1]=y*gen(2)+gen(1)
==>    _[2]=x*gen(2)+z*gen(2)
==> [3]:
==>    1,1 
==> 
fprintf(li,"%b",M);
==>            0     1
==> ------------------
==>     0:     1     1
==> ------------------
==> total:     1     1
==> 
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