www.pudn.com > CRGAB.zip > RANDMTX.C

/*---------------------------------------------------------------- 
  Main File : randmtx.exe 
  Author    : Bill Forseth, Fargo ND 
  Purpose   : generates an n(n+1) random matrix of integers 
  Syntax    : randmtx n [S]  
  Randomization : Standard Turbo C random functions - initialization 
    via system clock if no seed is specified. 
  Compiler  : Turbo C, v.2.0 
  Switches  : small model, 8086 instruction set, fp emulation. 
-----------------------------------------------------------------*/ 
#include  
#include  
#include  
#include  
 
/* 
  Arbitrary multiplier for random generation 
  (ie: random(n * default_range)) 
*/ 
#define default_range         3 
 
 
static unsigned SEED; 
 
void write_matrix(int size) 
{ 
  int i,j; 
 
  SEED ? srand(SEED) : randomize(); 
 
  for(i=0; i < size; ++i) 
  { 
    for(j=0; j < size; ++j) 
      printf("%-4d",random(size*default_range)); 
    printf("%d\n",random(size*default_range)); 
  } 
} 
 
 
 
 
int main(int argc, char **argv) 
{ 
  int size; 
 
  if(argc > 1) 
  { 
    size = atoi(argv[1]); 
    if(argc > 2) 
      SEED = (unsigned)atoi(argv[2]); 
    write_matrix(size); 
    return 0; 
  } 
  else 
  { 
    fprintf(stderr,"\nSyntax: randmtx n [S]\n"); 
    fprintf(stderr,"    Where n is the size of an n(n+1) A|b matrix,\n"); 
    fprintf(stderr,"    S is the seed for the random function (optional)\n"); 
    return 1; 
  } 
}