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for(i=0;i

{ strcpy(t,p[i]);strcpy(p[i],p[j]);strcpy(p[j],t);} }

void main()

{char p[][10]={\ f(p,5); printf(\}

A£©6 B£©4 C£©5 D£©3

7.2 Ìî¿ÕÌâ

7.2.1 ÔÚCÓïÑÔÖУ¬³ýÖ÷º¯ÊýÍ⣬Æä×Óº¯Êý·ÖΪ ±ê×¼¿âº¯Êý¡¢×Ô¶¨Ò庯Êý Á½Àà¡£ 7.2.2 ±äÁ¿ÔÚ³ÌÐòʹÓÃÖУ¬Æä×÷ÓÃÓò¿É·ÖΪ È«¾Ö ±äÁ¿ºÍ ¾Ö²¿ ±äÁ¿¡£ 7.2.3 ÒÔϺ¯ÊýÓÃÒÔÇóxµÄy´Î·½,Çë²¹³äÌî¿Õ¡£

double fun ( double x , int y ) { int i; double z;

for ( i=1 ; i <=y ; i + + ) z= z*x ; return z; }

7.2.4 ÒÔϳÌÐòµÄ¹¦ÄÜÊǼÆËã s?long f(int n)

{ int i; long s; s= 1 ; for(i=1; i<=n; i++) s= s*i ; return s; main()

{ long s; int k,n; scanf(\s= 0 ;

for(k=0; k<=n; k++) s=s+ f(k) ; printf(\ }

7.3 ±à³ÌÌâ

7.3.1 ±àдһ¸öº¯Êý£¬Æä¹¦ÄÜÊÇÅжÏÒ»¸öÊÇ·ñÊÇËØÊý£¬ÊÇ·µ»ØÎª1£¬²»ÊÇ·µ»ØÎª0¡£ int isprime(int x) { int i;

for(i=2;i<=x/2;i + + )

if(x%i = = 0) return (0);

?k!£¬Çë²¹³äÌî¿Õ¡£

k?0n

return 1 ;

}

7.3.2 ±àдһ¸öº¯Êý£¬Æä¹¦ÄÜÊǼÆËã¶þάÊý×éÿÐÐÖ®ºÍÒÔ¼°Ã¿ÁÐÖ®ºÍ¡£ void fun(int a[][4],int n,int row[],int col[]) { int i,j;

for (i=0;i

for (i=0;i<4;i++) col[i]=0;

for (i=0;i

row[i]+=a[i][j]; col[j]+= a[i][j]; } }

7.3.3 ±àÒ»×Óº¯Êý£¬ÔÚ100¡«999ÖдòÓ¡³öËùÓеÄ\Ë®ÏÉ»¨Êý\¡£Ëùν\Ë®ÏÉ»¨Êý\Ö¸Ò»¸ö

ÈýλÊý£¬Æä¸÷λÊý×ÖÁ¢·½ºÍµÈÓÚ¸ÃÊý±¾Éí¡£ÀýÈ磺153ÊÇÒ»\Ë®ÏÉ»¨Êý\£¬ÒòΪ153=13+53+33

void fun()

{int I,j,k,n;

for (n=100;n<1000;n++) {i=n/100; j=n/10-i*10; k=n;

if(n==i*i*i+j*j*j+k*k*k) printf(¡°%d¡±,n); }

printf(¡°\\n¡±); }

7.3.4 ´Ó¼üÅÌÉÏÊäÈë¶à¸öµ¥´Ê£¬ÊäÈëʱ¸÷µ¥´ÊÓÿոñ¸ô¿ª£¬ÓÃ'#'½áÊøÊäÈë¡£ÏÖ±àдһ

¸ö×Óº¯Êý°Ñÿ¸öµ¥´ÊµÄµÚÒ»¸ö×Öĸת»»Îª´óд×Öĸ£¬ÆäÖ÷º¯ÊýʵÏÖµ¥´ÊµÄÊäÈë¡£

void fun(char str[]) {

int i=0,j=0;

while (str[i]!='#') { if (str[i++]==' ') { if (str[j]>='a'&&str[j]<='z') str[j]-=32; j=i;

} }

}

7.3.5 ±àдº¯Êýfun(char str[20], int num£Û10£Ý),ËüµÄ¹¦ÄÜÊÇ£º·Ö±ðÕÒ³ö×Ö·û´®ÖÐÿ¸ö

Êý×Ö×Ö·û(0£¬1£¬2£¬3£¬4£¬5£¬6£¬7£¬8£¬9)µÄ¸öÊý£¬ÓÃnum£Û0£ÝÀ´Í³¼Æ×Ö·û0µÄ¸öÊý£¬ÓÃnum£Û1£ÝÀ´Í³¼Æ×Ö·û1µÄ¸öÊý£¬ÓÃnum£Û9£ÝÀ´Í³¼Æ×Ö·û9µÄ¸öÊý¡£×Ö·û´®ÓÉÖ÷º¯Êý´Ó¼üÅ̶ÁÈë¡£

fun(char str[20], int num[10]) {int i;

for (i=0;i<10;i++) num[i]=0

for (i=0;str[i]!=?\\0?;i++) num[str[i]-?0?]++; }

ϰÌâ°Ë

8.1 Ñ¡ÔñÌâ 8.4.1 ÏÂÃæ¸÷Óï¾äÐÐÖУ¬ÄÜÕýÈ·½øÐи³×Ö·û´®²Ù×÷µÄÓï¾äÐÐÊÇ ( C)

A) char s[4][5]={ \ B) char s[5]={?a?,?b?,?c?,?e?,?f?}; C) char *s; s=\ D) char *s=; scanf(¡°%s¡±,s); 8.4.2 ÕýÈ·µÄÊý×鶨ÒåÓï¾äΪ (D )

A) int A[¡°a¡±]; B) int A[3,5]; C) int A[ ][ ]; D) int *A[3]; 8.4.3 ÈôÓÐÒÔÏÂ˵Ã÷ºÍÓï¾ä£¬¶ÔcÊý×éÔªËØµÄÕýÈ·ÒýÓÃÊÇ(D)

int c[4][5], (*cp)[5]; cp=c;

A) cp+1 B) *(cp+3) C) *(cp+1)+3 D) *(*cp+2) 8.4.4 Ö´ÐÐÏÂÁÐÓï¾äºó£¬ÆäÊä³ö½á¹ûΪ (B )

#include void main()

{ int **k, *j, i=100; j=&i; k=&j;

printf(\}

A) ÔËÐдíÎó B) 100 C) iµÄµØÖ· D) jµÄµØÖ· 8.4.5 ÉèÓÐÈçϵijÌÐò¶Î:

char str[ ]=\char *ptr;ptr=str;

Ö´ÐÐÉÏÃæµÄ³ÌÐò¶Îºó£¬*(ptr+5)µÄֵΪ( B )

A) 'o' B) '\\0' C) ²»È·¶¨µÄÖµ D) 'o'µÄµØÖ· 8.4.6 ÈôÓÐ˵Ã÷£ºlong *p,a;

Ôò²»ÄÜͨ¹ýscanfÓï¾äÕýÈ·¸øÊäÈëÏî¶ÁÈëÊý¾ÝµÄ³ÌÐò¶ÎÊÇ£¨A£©¡£

A£©*p=&a;scanf(\ B£©p=(long *)malloc(8);scanf(\ C£©scanf(\ D£©scanf(\8.4.7 ÏÂÃæº¯ÊýµÄ¹¦ÄÜÊÇ£¨B £©

sss(s, t) char *s, *t;

{ while((*s)&&(*t)&&(*t++==*s++)); return(*s-*t);}

A) Çó×Ö·û´®µÄ³¤¶È B) ±È½ÏÁ½¸ö×Ö·û´®µÄ´óС

C) ½«×Ö·û´®s¸´ÖƵ½×Ö·û´®tÖÐ D) ½«×Ö·û´®s½ÓÐøµ½×Ö·û´®tÖÐ 8.4.8 ÇëÑ¡³öÒÔϳÌÐòµÄÊä³ö½á¹û£¨B £©

#include sub(x,y,z) int x, y, *z; { *z=y-x; } void main() { int a, b, c;

sub(10,5,&a); sub(7,a,&b); sub(a,b,&c); printf(\}

A) 5,2,3 B) -5,-12,-7 C) -5,-12,-17 D) 5,-2,-7 8.4.9 ÏÂÃæº¯ÊýµÄ¹¦ÄÜÊÇ£¨A£©

int fun1(char*x) { char *y=x; while(*y++); return(y-x-1); }

A£©Çó×Ö·û´®µÄ³¤¶È B£©±È½ÏÁ½¸ö×Ö·û´®µÄ´óС C£©½«×Ö·û´®x¸´ÖƵ½×Ö·û´®y D£©½«×Ö·û´®xÁ¬½Óµ½×Ö·û´®yºóÃæ 8.2 Ìî¿ÕÌâ

8.2.1 ÔÚÖ¸ÕëµÄ¸ÅÄîÖУ¬¡°*¡±±íʾµÄº¬ÒåÊÇËùÖ¸¶ÔÏóµÄÄÚÈÝ£¬¶ø¡°&¡±±íʾµÄº¬ÒåÊÇ È¡±äÁ¿µÄµØÖ· ¡£

8.2.2 Èç¹ûpÊÇÒ»¸öÖ¸Õ룬ÄÇô*&p±íʾµÄº¬ÒåÊÇ P £¬¶ø&*p±íʾµÄº¬ÒåÊÇ

P ¡£

8.2.3 ͳ¼Æ´ÓÖÕ¶ËÊäÈëµÄ×Ö·ûÖÐÿ¸ö´óд×ÖĸµÄ¸öÊý¡£ÓÃ#ºÅ×÷ΪÊäÈë½áÊø±êÖ¾£¬Çë

Ìî¿Õ¡£

#include #include void main( ) { int num[26],i; char c,*pc=&c;

for(i=0; i<26; i++) num[i]=0;

while( (c(»òÕß*pc)=getchar()) !='#') /*ͳ¼Æ´ÓÖÕ¶ËÊäÈëµÄ´óд×Öĸ¸öÊý*/

if( isupper(*pc)) num[*p-65]+=1;

for(i=0; i<26; i++) /*Êä³ö´óд×ÖĸºÍ¸Ã×ÖĸµÄ¸öÊý*/