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与y=(x>0 1:x<0 -1:0);的功能相同的if语句是( )。

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if(x>0)y=1    else if(x<0)y=-1;    else y=O;  if(x)   if(x>0)y=1;    else if(x<0)y=-1;  y=-1;   if(x)   if(x>0)y=1;   else if(x==0)y=0;   else y=-1;  y=0;   if(x>=0)   if(x>0)y=1;   else y=-1;  
if((a>b)&&(b>c))k=1;  else k=0;  if((a>b)  (b>c))k=1;  else k=0;  if(a<=b)k=0;  else if(b<=c)k=1;  if(a>b)k=1;  else if(b>c) k=1;  else k=0;  
if(x>0)y=1   else if(x<0)y=-1;   else y=O;  if(  if(x>0)y=1;  else if(x<0)y=-1;  y=-1;  if(  if(x>0)y=1;  else if(x==0)y=0;  else y=-1;  y=0;  if(x>=0)  if(x>0)y=1;  else y=-1;  
xyx-1lnx  yx-1(x+lny)  yx-1(xlny+1)  yln2y  
if(a>b)&&(b>c)k=1;
else k=0;  
if(a>b)  (b>c))k=1;
else k=0;  
if(a<=b)k=0;
else if(b<=c)k=1;
else k=0;  
if(a>b)k=1;
else if(b>c)k=1;  
if((a>b)&&(h>c))k=1;  else k=0;  if((a>b)  (b>c))k=1;  else k=0;  if(a<=b)k=0;  else if(b<=c)k=1;  if(a>b)k=1;  else if(b>c)k=1;  else k=0;  
if((a>b)&&(b>c))k=1; else k=0;  if((a>b)  (b>c))k=1; else k=0;  if(a<=b)k=0; else if(b<=c)k=1;  if(a>b) k=1; else if(b>c) k=1;  
if((a>b) && (b>e)) k=1;
else k=0;  
if((a>b)  (b>e)) k=1;
else k=0;  
if(a<=b) k=0;
else if(b<=c) k=1;  
if(a>b) k=1;
else if(b>c) k=1;
else k=0;  
if(x>0)y=1;
else if(x<0)y=-1;
else y=0;
else y=0;  
if(x)
if(x>0)y=1;
else if(x<0)y=-1;  
y=-1;
if(x)
if(x>0)y=1;
else if(x==0)y=0;
else y=-1;  
y=0;
if(x>=0)
if(x>0)y=1;
else y=-1:  
if(x>0)y=1; else if(x<0)y=-1; else y=0; else y=0;  if( if(x>0)y=1; else if(x<0)y=-1;  y=-1; if( if(x>0)y=1; else if(x==0)y=0; else y=-1;  y=0; if(x>=0) if(x>0)y=1; else y=-1:  
if((a>b) && (b>e)) k=1; else k=0;  if((a>b)  (b>e)) k=1; else k=0;  if(a<=b) k=0; else if(b<=c) k=1;  if(a>b) k=1; else if(b>c) k=1; else k=0;  
if(x>0)y=1
   else if(x<0)y=-1;
   else y=O;  
if(x)
  if(x>0)y=1;
  else if(x<0)y=-1;  
y=-1;
  if(x)
  if(x>0)y=1;
  else if(x==0)y=0;
  else y=-1;  
y=0;
  if(x>=0)
  if(x>0)y=1;
  else y=-1;  
if((a>b)&&(b>c))k=1;  else k=0;  if((a>b)‖(b>c))k=1;  else k=0;  if(a<=b)k=0;  else if(b<=c)k=1;  if(a>b)k=1;  else if(b>c) k=1;  else k=0;  
if((a>b)&&(b>c))k=1;  else k=0;  if((a>b)  (b>c))k=1;  else k=0;  if(a<=b) k=0;  else if(b<=c) k=1;   if(a>b)k=1;  else if(b>c)k=1;  else k=0;  
if(x>0)y=1;  if(x)
else if(x<0)y=1; if(x>0)y=1;
else y=0; else if(x<0)y=-1;
else y=0;  
y=-1  y=0;
if(x) if(x>=0)
if(x>0)y=1; if(x>=0)y=1;
else if(x==0)y=0; else y=-1;
else y=-1;  
字符串a的长度  字符串b的长度  字符串a和b的长度之差  字符串a和b的长度之和  
if((a>b)&&(b>c))k=1;  else k=0;  if((a>b)‖(b>c))k=1;  else k=0;  if(a<=b)k=0;  else if(b<=c)k=1;  if(a>b)k=1;  else if(b>c) k=1;  else k=0;  

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