Question

How can I express this C language code "loops" to MIPS language program. Thank you

int main()
{
   int Z=2;
   int i;

   i=0;
   while(1){
     if(i>20)
       break;
    Z++;
    i+=2;
   }
 
   do {
      Z++;
   } while (Z<100);
  
   while(i > 0) {
      Z--;
      i--;
}

Answer 1

MIPS assembly code for the C program:

===================

main:
   li $t2,2   # Z=2
   li $t0,0   # i=0
  
L1:    beq $t0,20,skip       # if (i >20)
   blt $t0,20,skip
   j L2           # break
skip:    add $t2,$t2,1       # Z++
   add $t0,$t0,2       # i+=2
   j L1           # while(1)
L2:   add $t2,$t2,1       # do Z++
   blt $t2,100,L2       # while (Z<100)
L3:   beq $t0,0 exit       # while i>0
   add $t2,$t2,-1       # Z--
   add $t0,$t0,-1       # i--
   j L3
exit:

====================