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5.1.121 printf
Procedure from library standard.lib (see standard_lib).
- Syntax:
printf ( string_expression [, any_expressions] )
- Return:
- none
- Purpose:
printf(fmt,...); performs output formatting. The first
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 displayed (i.e., printed to standard out).
The control string fmt is 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 of print,
the %n and %2 conversion 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.
Example:
| | ring r=0,(x,y,z),dp;
module m=[1,y],[0,x+z];
intmat M=betti(mres(m,0));
list l=r,m,matrix(M);
printf("s:%s,l:%l",1,2);
==> s:1,l:int(2)
printf("s:%s",l);
==> s:(QQ),(x,y,z),(dp(3),C)
printf("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
printf("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)),
==> matrix(ideal(1,
==> 1),1,2))
==>
printf("%p",matrix(M));
==> 1,1
printf("%;",matrix(M));
==> _[1,1]=1
==> _[1,2]=1
==>
printf("%b",M);
==> 0 1
==> ------------------
==> 0: 1 1
==> ------------------
==> total: 1 1
==>
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See also:
fprintf;
print;
sprintf;
string.
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