Question

How does the nested For implementation

compare to the standard For implementation in the assembly language using masm

Answer 1

Let me illustrate how nested for is implemented in the assembly language using masm:

for(var i =0 ; i< 10 ; i++){

    for(var j = 0 ; j<10;j++){

         s=i+j;

    }

}

In masm, this can be written as

      mov ecx, 0

      outerLoop:

              cmp ecx , 10

              je done

             mov ebx, 0

      innerLoop:

             mov eax,ecx

             add eax,ebx

             cmp ebx,10

             je innerLoopDone

         inc ebx

             jmp innerLoop

   innerLoopDone:

               inc ecx

              jmp outerLoop

   done:

We can understand this code easily,firstly cmp means compare ,inc means incrementing the value by 1 and je means jump if equal .The above for loop is thereby programmed in masm .In standard for loop also , we write in the similar manner putting Loop control over there .And the operations to be performed are then done in the loop control.