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2¡¢#define,const
3¡¢Îļþ¿½±´µÄ´úÂë,¶¯Ì¬Éú³ÉÄÚ´æ,¸´ºÏ±í´ïʽ,strcpy,memcpy,sizeof
4¡¢º¯Êý²ÎÊý´«µÝ,ÄÚ´æ·ÖÅ䷽ʽ,ÄÚ´æ´íÎó±íÏÖ,mallocÓënewÇø±ð
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bool  bParam;
int  iParam;
float fParam;
int*  pParam;
char  cParam;
if(bParam) ,if(!bParam);
if(iParam == 0 ),if(iParam != 0 );
if(fParam>= -0.00001 && fParam <= 0.00001);
if(pParam == NULL),if(pParam != NULL);
if(cParam == '\0'),if(cParam != '\0');
if/else/return µÄʹÓ÷½·¨
if(condition)    ¿ÉÒԵȼÛΪ  return (condition?x:y);
{
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}
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{
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for:
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int row,col,sum;
int a[100][5];
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{                                        {
  for(col=0;col <5;col++)                    for(row=0;row <100;row++)
  {                                          {
      sum = sum+a[row][col];                    sum = sum+a[row][col];
  }                                          }
}                                        }
int i;
for(i=0;i <N;i++)


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