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clc;
clear;
//example25.28
//finiding two's complement
//a=input(" Enter the number (binary) :");
a=1010;
for i=1:4
a1(i)=modulo(a,10);
a=a/10;
a=round(a);
end
for i=1:4//making one's complement of number
a1(i)=bitcmp(a1(i),1);
end
for i=1:4
car(1)=1;
re(i)=a1(i)+car(i);//addition of one to one's complement to contain two's complement
if re(i)== 2 then
car(i+1)= 1;
re(i)=0;
elseif re(i)==3 then
car(i+1)= 1;
re(i)=1;
else
car(i+1)=0;
end;
end;
re2=0;
format('v',18);
for i=1:4
re2=re2+(re(i)*(10^(i-1)))
end;
disp(re2,'two s complement is');
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