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C/C++ Users Group Library 1996 July
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C-C++ Users Group Library July 1996.iso
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v_10_06
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1006092a
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1991-09-08
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894b
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51 lines
/* LISTING 7 */
#define DM3init
#define DM3type double **
DM3init;
DM3type DM3alloc(int r, int c) {
int i;
DM3type p;
p = (DM3type)
malloc((unsigned)(1+r)*sizeof(double *));
for( i=0; i<r; ++i )
p[i] = (double *)
malloc((unsigned)c*sizeof(double));
p[i] = (double *)0;
return p;
}
#define DM3item(x,i,j) x[i][j]
void DM3free(DM3type x) {
int i;
for( i=0; x[i] != (double *)0; ++i ) {
free((void *)x[i]);
}
free((void *)x);
}
main()
{
DM3type m;
int i,j;
m = DM3alloc(7,13);
for(i=0; i<7; ++i)
for(j=0; j<13; ++j)
DM3item(m,i,j) = (double) (i*100)+j;
for(i=0; i<7; ++i) {
for(j=0; j<13; ++j)
printf("%3g ",DM3item(m,i,j) );
printf("\n");
}
DM3free(m);
}