function strCmp(char* s1, s2) {
  uses edi esi;
  
  esi = s1;
  edi = s2;
  
  lodsb
  while (char[edi] == al) {
    lodsb
    edi++;
    
    if (al == 0) { break; }
  }
  
  if (al == 0 and char[edi] == 0) {
    xinc eax;
  } else {
    eax = xor;
  }
}

int fastcall strcmp2(ESI,EDI)          // mixed asm & C  
{ 
   AL = DSBYTE[ESI]; 
   while(AL==DSBYTE[EDI]) 
     { 
       if(AL==0) return 0; 
       ESI++;  EDI++; 
       AL = DSBYTE[ESI]; 
     } 
   return  DSBYTE[ESI] - DSBYTE[EDI]; 
} 

/*************************************** 
*             Sphinx C--               *   
*                                      * 
*     strcmp demo  By Emil Halim       * 
*           23 / 9 / 2011              * 
***************************************/ 

#pragma option w32         //create Windows GUI EXE. 
#pragma option OBJ         //create OBJ file 
#pragma option OS          //speed optimization  
#pragma option J0          //no startup code. 

#include <Windows.h>  

#pragma option ia          // allow inline asm 
#pragma option LST 

extern cdecl _printf();    
#define printf  _printf 


/*************** 
s > t >>>  > 0 
s = t >>>  = 0 
s < t >>>  < 0 
***************/ 
int strcmp1(char *s, char *t)           // pure C code 
{ 
   for( ;byte *s == byte *t; s++, t++) 
   if (byte *s == '\0') return 0; 
   return  DSBYTE[s] - DSBYTE[t]; 
} 

int fastcall strcmp2(ESI,EDI)          // mixed asm & C  
{ 
   AL = DSBYTE[ESI]; 
   while(AL==DSBYTE[EDI]) 
     { 
       if(AL==0) return 0; 
       ESI++;  EDI++; 
       AL = DSBYTE[ESI]; 
     } 
   return  DSBYTE[ESI] - DSBYTE[EDI]; 
} 

char* testStr1 = "SPHINX C-- is so easy (an intermediate position between Assembler and C)"; 
char* testStr2 = "SPHINX C-- is so easy (an intermediate position between Assembler and C)"; 

main() 
{ 
_start:   
     printf("string length is %d\n",strcmp1( testStr1 , testStr2 ));  
     printf("string length is %d\n",strcmp2( testStr1 , testStr2 ));  
     MessageBox(0,"","",0);  
}