if(!isspace( ¢Ú ))c[t++]=s[i]; c[t]=¡®\\0¡¯; strcpy(s,c); }
¢Ù A) s[i] B) !s[i] C) s[i]=¡®\\0¡¯ D) s[i]==¡®\\0¡¯ ¢Ú A) s+i B) *c[i] C) *(s+i)=¡®\\0¡¯ D) *(s+i)
18. ÒÔÏÂconjº¯ÊýµÄ¹¦ÄÜÊǽ«Á½¸ö×Ö·û´®sºÍtÁ¬½ÓÆðÀ´¡£
char *conj(char *s,char *t) { char *p=s;
while(*s) ¢Ù ; while(*t)
{*s= ¢Ú ;s++;t++;} *s=¡®\\0¡¯; ¢Û ; }
¢Ù A) s-- B) s++ C) s D) *s ¢Ú A) *t B) t C) t-- D) *t++ ¢Û A) return s B) return t C) return p D) return p-t
19. ÏÂÁгÌÐòµÄÊä³ö½á¹ûÊÇ ¡£
#include <> main()
{int **k,*a,b=100;a=&b; k=&a;printf(¡°%d\\n¡±,**k);}
A£© ÔËÐгö´í B) 100 C) aµÄµØÖ· D) bµÄµØÖ· 20. ÏÂÁгÌÐòµÄÊä³ö½á¹ûÊÇ ¡£
#include <> fun(int *a,int *b)
{int *w;*a=*a+*a;*w=*a; *a=*b; *b=*w;} main()
{int x=9,y=5,*px=&x,*py=&y;fun(px,py);printf(¡°%d, %d\\n¡±,x,y);} A)³ö´í B) 18, 5 C) 5, 9 D) 5, 18 21. Èô¶¨ÒåÁËÒÔϺ¯Êý£º
void f(¡¡) {¡¡
p=£¨double *)malloc(10*sizeof(double)); ¡¡ }
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A) double *p Èý£®±à³ÌÌâ
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#include <>
void compute(int m, int n, int *sum, int *p); void compute(int m, int n, int *sum, int *p) { *sum=m+n; *p=m*n; }
void main()
{ int x,y,sum,product;
printf(\ scanf(\
compute(x,y,&sum,&product);
printf(\}
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#include <> #include <> void main()
{ char string[81],digit[81]; char *ps; int i=0;
printf(\ gets(string); ps=string;
while(*ps!='\\0')
{if(*ps>='0' && *ps<='9') { digit[i]=*ps; i++; }
ps++; }
digit[i]='\\0';
printf(\ digit=%s\\n\}
B) float **p C) double **p D) float *p
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#include <> #include <>
int StringLength(char *s); int StringLength(char *s) { int k;
for(k=0;*s++;k++); return k; }
void main()
{ char string[81];
printf(\ gets(string);
printf(\}
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#include <> #include <>
char *Upper(char *s); char *Upper(char *s) { char *ps; ps=s; while(*ps)
{if(*ps>='a' && *ps<='z') *ps=*ps-32; ps++; }
return s; }
void main()
{ char string[81];
printf(\ gets(string);
printf(\
printf(\}
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#include <> #include <>
int Occur(char *s, char c); int Occur(char *s, char c) { int k=0; while(*s) { if(*s==c) k++; s++;
}
return k; }
void main()
{ char string[81],c;
printf(\ gets(string);
printf(\ c=getchar(); printf(\%c occurs string %s\\n\}
#include <> #include <>
int IsSubstring(char *str,char *substr) { int i,j,k,num=0;
for(i=0;str[i]!='\\0' && num==0 ;i++)
{ for(j=i ,k=0;substr[k]==str[j];k++,j++) if(substr[ k+1 ]=='\\0') { num=1; break; } }
return num; }
void main()
{ char string[81],sub[81]; printf(\ gets(string);
printf(\ gets(sub);
printf(\ if(!IsSubstring(string,sub)) printf(\
printf(\}
%d times in
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