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#define MIN(x,y) x <y?x:y
main()
{
  int i,j,k;
  i=10;j=15;
  k=10*MIN(i,j);
  printf("%d\n",k);

}

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k=10*MIN(i,j)
====> 10*x <y?x:y ×¢Òâ,²»ÊÇ10*(x <y?x:y)
====> 10*10 <15?10:15
====>15
Ò²¾ÍÊÇ˵MIN(i,j)±»x <y?x:yÖ±½ÓÌæ»»ÁË
ºÜºÃÀí½â£¬Äã²»ÒªÏëÏóÖиøËü¼ÓÀ¨ºÅ¾ÍÃ÷°×ÁË

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k=10*MIN(i,j);--> k=10*x <y?x:y

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C/C++ code:

#include <stdio.h>
//#define MIN(x,y) x <y?x:y
#define MIN(x,y) (x <y?x:y)
main()
{
int i,j,k;
i=10;j=15;
k=10*MIN(i,j);
//k=10*i<j?i:j;
//ËãÊõÔËËã·ûµÄÓÅÏȼ¶*,´óÓÚ¹ØÏµÔËËã·û >
printf("%d\n",k);

}


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