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  1. #include<stdio.h>
  2.  
  3. typedef char bit;
  4. bit carry = 0;
  5. bit halfadd( bit A, bit B ){
  6.     carry = A & B;
  7.     return A ^ B;
  8. }
  9. bit fulladd( bit A, bit B ){
  10.     bit xor = A ^ B;
  11.     bit ret = carry ^ xor;
  12.     carry = (carry & xor) | (A & B);
  13.     return ret; 
  14. }
  15.  
  16. void fillNum( int num, bit *array ){
  17.     int i;
  18.     for( i = 0; i < 32; ++ i ){
  19.         array[i] = ( num >> i ) & 1;
  20.     }
  21. }
  22.  
  23. int main(){ 
  24.     bit num1[32] = {0}, num2[32] = {0};
  25.     int A = 64620926, B = 1531529858;
  26.     fillNum( A, num1 );
  27.     fillNum( B, num2 );
  28.  
  29.     int r = 0;
  30.     bit tmp = halfadd( num1[0], num2[0] );
  31.     putchar( tmp ? '1' : '0' );
  32.     r = tmp;
  33.     int i;
  34.     for( i = 1; i < 32; ++i ){
  35.         tmp = fulladd( num1[i], num2[i] );
  36.         r += tmp << i;
  37.         putchar( tmp ? '1' : '0' );
  38.     }
  39.     putchar( carry ? '1' : '0' );
  40.     printf("\n%d\n\n%d + %d = %d", r, A, B, A+B);
  41.     return 0;
  42. }
Success #stdin #stdout 0s 1788KB
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stdin
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Standard input is empty
stdout
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000000000010101011000100111110100
1596150784

64620926 + 1531529858 = 1596150784
https://ideone.com/SjgA03
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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