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/* ѧÉú³É¼¨²éѯϵͳ */
# include <stdio.h>
# include <stdlib.h>
 
int main( )
{
    int select;
    int i, j;
    int score[5][7];
    int average = 0;
    int sum = 0;
    do{
        printf("±¾³ÌÐòÓÐ4ÏÄÜ£º\n");
        printf(" 1. ¸ù¾ÝѧºÅ²éѯѧÉú³É¼¨\n");
        printf(" 2. ¸ù¾Ý¿¼ÊÔºÅͳ¼Æ³É¼¨\n") ;
        printf(" 3. ¸ù¾Ý¿¼ÊԺźÍѧºÅ²éѯ³É¼¨\n");
        printf(" 4. ³É¼¨Â¼Èë\n");
        printf(" 0. Í˳ö\n");
        printf(" ÇëÊäÈëÑ¡Ôñ(0 - 4): ");
        scanf("%d", &select);
        switch(select)
        {
        case 0:
            printf("Good-Bye~\n");
            exit(0);
            break;
        case 1:
            printf("ÊäÈëѧºÅ£º"); // ¸ù¾Ýiֵȷ¶¨Ñ§ºÅ£¬È»ºó°´Ñ§ºÅÊä³öÈ«²¿³É¼¨
            scanf("%d\n", &i);
            for(j=1; j<7; j++)
            {
                printf("µÚ%d¿Æ³É¼¨ÊÇ%d\n", j, score[i][j]);
                sum += score[i][j];  // ʵÏÖÀÛ¼Ó
    &nb


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C/C++ÖеÄÄÚ´æ²¹Æë»úÖÆ

      ÔÚCÓïÑÔÖУ¬½á¹¹ÊÇÒ»ÖÖ¸´ºÏÊý¾ÝÀàÐÍ£¬Æä¹¹³ÉÔªËØ¼È¿ÉÒÔÊÇ»ù±¾Êý¾ÝÀàÐÍ£¨Èçint¡¢long¡¢floatµÈ£©µÄ±äÁ¿£¬Ò²¿ÉÒÔÊÇһЩ¸´ºÏÊý¾ÝÀàÐÍ£¨ÈçÊý×é¡¢½á¹¹¡¢ÁªºÏµÈ£©µÄÊý¾Ýµ¥Ôª¡£ÔڽṹÖУ¬±àÒëÆ÷Ϊ½á¹¹µÄÿ¸ö³ÉÔ±°´Æä×ÔÈ»¶Ô½ç£¨alignment£©Ìõ¼þ·ÖÅä¿Õ¼ä¡£¸÷¸ö³ÉÔ±°´ÕÕËüÃDZ»ÉùÃ÷µÄ˳ÐòÔÚÄÚ´æÖÐ˳Ðò´ ......

C_Êý¾ÝÀàÐÍת»»

 Ô´Âë:
# include <stdio.h>
 
int main()
{
    /* ¶¨Òå±äÁ¿²¢¸³³õÖµ */
     int    a = 5;       
    char   c = 'a';   // 'a'µÄASCÂëµÄֵΪ97
    ......

C_³õʶָÕë

 Ô´Âë:
# include <stdio.h>
 
int main()
{
    /* ¶¨ÒåÒ»¸öÕûÐÎÖ¸Õëp */
    int *p;
    int begin, end;
 
    begin = 10;
    /* ¸øÖ¸Õëp¸³³õÖµ */
    p = &begin;
  & ......

C_ÅжÏÓï¾äifµÄÒ»°ãʹÓÃ

Ô´Âë:
# include <stdio.h>
     
int main()
{
        int x, y, z, mid, dec;
        printf("ÇëÈÎÒâÊäÈëÈý¸öÕûÊý£º\n");
        scanf("%d %d %d", &x, & ......
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