del@AB.ECN.PURDUE.EDU (del Amitri) (05/03/90)
winner takes all.
from within a teeney-little routine (func()), i need to assign values
to some arrays, whose address and size i pass to that array.
the actual assignemnt syntax within func() has me baffled...
thanks
del@ab.ecn.purdue.edu
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the array types are declared by the union:
union utyp {
int *_int;
float *_float;
char **_char;
}
#define _INT 1
#define _FLT 2
#define _ALP 3
so:
main()
{
float a[10][3];
char b[10][3][20];
int c[10][3];
func(a, _FLT, 10, 3);
func(b, _ALP, 10, 3);
func(c, _INT, 10, 3);
}
func(var, typ, ysize, xsize)
union utyp *var;
int typ, ysize, xsize;
{
if (!ysize) ysize = 1;
if (!xsize) xsize = 1;
for (i = 0 ; i < ysize ; i++)
for (j = 0 ; j < xsize ; j++)
switch (typ) {
/*
depending upon the incoming array type,
assign values into that incoming array
(essentially need to do x[i][j] = value)
the values being assigned are globally
accessible.
*/
/*
so, what is the syntax for each case?
*/
case _INT: var->_int[i * xsize + j] = value;
case _FLT: var->_float[i * xsize + j] = value;
case _ALP: strcpy(var->_char[i * xsize + j],
value);
}
}