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# include <stdio.h>
int main()
{
int i, j, k;
/* ±äÁ¿i´Ó0µ½4£¬±íʾËù»ÁâÐÎͼµÄµÚÒ»ÖÁµÚÎåÐÐ */
for(i = 0; i <= 4; i++)
{
/* µ±ÐÐÊýΪiʱ£¬¿Õ¸ñÊýÊÇiµÄº¯Êý£¬Îª4-i¸ö */
for(j = 0; j <= 3-i; j++)
printf(" ");
/* ÐǺÅÊýÒ²ÊÇiµÄº¯Êý£¬Îª2i+1¸ö */
for(k = 0; k <= 2*i; k++)
printf("*");
printf("\n");
}
/* ±äÁ¿i´Ó0µ½3£¬±íʾËù»ÁâÐÎͼµÄµÚÁùÖÁµÚ¾ÅÐÐ */
for(i = 0; i <= 3; i++)
{
/* µ±ÐÐÊýΪiʱ£¬¿Õ¸ñÊýÊÇiµÄº¯Êý£¬´ËʱΪi¸ö */
for(j = 0; j <= i; j++)
printf(" ");
/* ÐǺÅÊýÒ²ÊÇiµÄº¯Êý£¬´ËʱΪ7-2i¸ö */
for(k = 0; k <= 6-2*i; k++)
printf("*");
printf("\n");
}
return 0;
}
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# include <stdio.h>
int main()
{
/* »»Ðзû'\n'£¬ÓÃÓÚÊä³ö»»ÐÐ */
printf("How are you?\n");
printf("I am fine.\n\n");
/* ºáÏòÌø¸ñ·û'\t'£¬Ê¹Ìøµ½ÏÂÒ»¸öÊä³öÇø */
  ......
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# include <stdio.h>
int main()
{
/* sex´ú±íÊäѪÕßµÄÐÔ±ð£¬weight´ú±íÊäѪÕßµÄÌåÖØ£¬cubage´ú±íÊäѪÁ¿ */
int sex, weight, cubage;
printf("Çë¸ø³öÊäѪÕßµÄÐÔ±ð£¨Å®ÐÔΪ¸ºÊý£©ºÍÌåÖØ£º(ÓöººÅ¸ô¿ª)");
&nbs ......
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# include <stdio.h>
int main()
{
int num;
/* ÏÂÃæ¶¨ÒåµÄ¸÷±äÁ¿£¬·Ö±ð´ú±í¸öλ£¬Ê®Î»£¬°Ùλ£¬Ç§Î»£¬Íòλ£¬Ê®ÍòλÒÔ¼°Î»Êý */
int indiv, ten, hundred, thousand;
int ten_thousand, hundred_thous ......