NetApp Interview Question Software Engineer / Developers




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2 64bit num
int a[2], b[2], c[2];
c[1]=a[1]+b[1];
c[0]=a[0]+b[0];
if((c[0] < a[0] + b[0]) && a[0] > 0) ||
((c[0] > a[0] + b[0]) && a[0] < 0))
{
c[1}+=1;
}

- Ben on June 12, 2010 | Flag Reply
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Please Explain condition in if loop

- Raj on September 23, 2012 | Flag
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c[1}+=1; is fine when (c[0] < a[0] + b[0]) && a[0] > 0).
however why to increment c[1] by 1, when (c[0] > a[0] + b[0]) && a[0] < 0) ?

- bvgr on January 02, 2013 | Flag
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Add the least significant bytes first, keep the carry. Add the most significant bytes considering the carry from LSBs:

; x86 assembly, Intel syntax
; adds ecx:ebx to edx:eax
add eax, ebx
adc edx, ecx

- keyurpatel80 on July 06, 2014 | Flag Reply


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