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# include <stdio.h>
/* ºê¶¨Òå */
# define MAX 100
# define LEN 80
 
/* Ò»¸ö·Ç³£¼òµ¥µÄÎı¾±à¼­Æ÷ */
int main()
{
    char text[MAX][LEN];  // ¶¨Òå×Ö·ûÐÍÊý×é
    register int t, i, j;    /* ¶¨ÒåÈý¸ö¼Ä´æÆ÷±äÁ¿ */
    /* ÖðÐÐÊäÈë×Ö·û´® */
    for(t=0; t<MAX; t++)    
    {
        printf("%d: ", t);
        gets(text[t]);
        if(!text[t][0])
            break;  /* ¿ÕÐÐÍ˳ö */
    }
     
    /* °´ÐУ¬Öð¸ö×Ö·ûÊä³ö×Ö·û´® */
    for(i=0; i<t; i++)  
    {
        for(j=0; text[i][j]; j++)
            putchar(text[i][j]);
        putchar('\n');
    }
    return 0;
}


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¡¡¹Ø¼ü´Ê£ºC#£»ÔÚÏßÉý¼¶£»×Ô¶¯Éý¼¶£ ......

C_תÒå×Ö·û

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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 */
  ......

C_ʹÓÃswitchÓï¾ä

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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 ......

C_ÔËÓÃdo

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# include <math.h>
# include <stdio.h>    /* Êýѧº¯Êý¿â */
 
int main()
{
    /* ÓÃs±íʾ¶àÏîʽµÄÖµ£¬ÓÃt±íʾÿһÏîµÄÖµ */
    double s, t, x; // ´Ë´¦ÓÃË«¾«¶ÈÉùÃ÷±äÁ¿
    int n;
    printf ......

C_ʹÓÃbreakºÍcontinue¿ØÖÆÑ­»·Óï¾ä

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# include <stdio.h>
 
int main( )
{
    int radius;
    double area;
    for(radius = 1; radius <= 10 ; radius++)
    {
        area = 3.1416 * radius * radius;
   ......
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