www.pudn.com > DOS保护模式下汇编程序设计.zip > EXAMPLE2.C

/* The following Microsoft C 7.0 program should be linked with the assembly 
language library in Example 2.  Combine the library with XLIB.LIB using the 
Microsoft Lib utility.  The C program first initializes XLIB.  Next, it 
creates a float array.  A control block for SUMARRAY is then constructed 
and the call to SUMARRAY is executed.  Finally, the condition code in the 
control block is inspected and results are printed. */ 
 
#include  
#include  
 
extern long __far __pascal LINADR(void __far *ptr); 
extern void __far __pascal SUMARRAY(void __far *ptr); 
 
struct arraydata 
{ 
  long condcode; 
  long n; 
  long address; 
  float sum; 
} ad; 
 
float a[101]; 
 
main() 
{ 
  int i; 
  long temp; 
 
  temp = INITXLIB(); 
  if (temp != 0) 
  { 
    printf("Initialization Error:  %lX\n",temp); 
    return 0; 
  } 
 
  for(i = 0; i <= 100; i++) 
    a[i] = i; 
 
  ad.condcode = 0; 
  ad.n = 50; 
  ad.address = LINADR(a); 
 
  SUMARRAY(&ad); 
  if (ad.condcode != 0) 
  { 
    printf("Error:  %lX\n",ad.condcode); 
    return 0; 
  } 
  printf("Sum:  %f\n",ad.sum); 
}