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ÄÚµå

#include <stdio.h> 
static int weight[32]; 
 
int * blockWeight(int a) 
{ 
  int n = 0; 
  int mask = 1; 
 
  for (n = 0; n < 32; n++) 
  { 
    weight[n] = (a >> 31) & mask; 
    a = a << 1; 
  } 
  return weight; 
} 
 
int main(int argc, char **argv) 
{ 
  int i = 1; 
  int *w; 
 
  w = blockWeight(argv[1]); 
  for (i = 0; i < 32; i++) 
  { 
    printf("%d", w[i]); 
    if ((i+1)%8 == 0) printf(" "); 
  } 
  printf("\n"); 
} 
 

Å×½ºÆ®

# ./bweight -1 
11111111 11111111 11111111 11111111 
# ./bweight 1024 
00000000 00000000 00000100 00000000 
 
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