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%o °Ë½øÖÆÕûÊýÐÎʽ  %mo
%x Ê®Áù½øÖÆÕûÊýÐÎʽ  %mx
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   printf("%s", "China");
   Êä³ö China
 2.%ms ¿ØÖÆÎªmÁÐ Èô´®³¤Ð¡ÓÚm, Ôò×󲹿ոñ,´óÓÚÔòÍ»ÆÆmÏÞÖÆ,½«×Ö·û´®ÍêÈ«Êä³ö
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¸ñʽ¿ØÖÆÖпÉÒÔ°üº¬×ªÒå×Ö·û,Èç'\n' '\t' '\b' '\r'
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scanf(¸ñʽ¿ØÖÆ, µØÖ·±íÁÐ) sscanf
ÀàËÆprintf .ÒÔÀý³Ì½âÊÍ
1. scanf("%3d%3d", &a, &b); //ÁÐÊý½ØÈ¡Êý¾Ý
   input -> 123456
   then -> a = 123  b = 456
2. scanf("%2d %*3d %2d", &a, &b) //*±íÊ¾Ìø¹ýÁÐÊý¶ÁÈ¡Êý¾Ý
   input -> 12 345 67
   then -> a = 12 b = 67
3. scanf("%d, %d", &a, &b)
   input -> 1, 4  //ÔÚ¸ñʽ¿ØÖÆÖÐ,Èç¹ûÓзǸñʽ˵Ã÷ÍâµÄ×Ö·û,Ó¦¸ÃÔÚÊäÈëʱÔÚ¶ÔӦλÖÃÊäÈë¸Ã×Ö·û
   scanf("%d   %d", &a, &b)  //ÊäÈëʱ,Á½Êý¾ÝÓ¦Óв»ÉÙÓÚ¸ñʽ¿ØÖÆÖеĿոñ
   scanf(&quo


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