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C语言程序设计答案(第三?杜友福版 - 百度文库

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}

}

digit[i]='\\0';

printf(\ digit=%s\\n\

3. дʵַ֣Ĵ #include <> #include <>

int StringLength(char *s) { int k; for(k=0;*s++;k++); return k; }

void main() {

char string[81]; printf(\ gets(string); printf(\}

4. дʵ֣һַеĸȫתΪд #include <> #include <>

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(\}

5. дʵ֣һַһַгֵĴ

#include <> #include <>

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,Occur(string,c),string); }

6. дʵ֣жһַǷijַг֡ #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(\

7. nΧһȦ˳źšûӼ뱨ʼλãӸ˿ʼ0ʼΪ3ıȦʣµǼ ѧ

8. һͶά飬СΪmnҪҳֵڵкУԼֵһmaxԪmain룬ںmax ѧ

9. nѧÿѧmſγ̣Ҫһܼnѧ޲Ŀγ̣ijһѧһŻһϿγ̲񣬾ѧĺ루ѧŴ0ʼȫγ̳ɼ ѧ

ϰʮһ һѡ

110: A A B D D B D D D C 1120: C B B C C

1___2______3_ _

2 struct node *next

3 struct link *head p->data p->next 4__ A _

1д򣬽 #include <> struct Complex { double m_r,m_i; };

struct Complex sub(struct Complex c1,struct Complex c2) {

struct Complex c; = = return c; }

void main() {

struct Complex c1 ={,},c2={,}; struct Complex c; c=sub(c1,c2);

printf(c=%g+i%g\\n,,; }

2һꡢ¡յĽṹ塣һڣڱǵڼע⡣ #include <> struct ymd { int day; int month; int year; };

int dayof[13]={0,31,28,31,30,31,30,31,31,30,31,30,31}; int days(struct ymd *p) { int i,d; if(p->year%4==0&&p->year0!=0||p->year@0==0) dayof[2]=29; d=p->day; for(i=1;imonth;i++) d=d+dayof[i]; return (d); }

void main() { struct ymd date; int d; for(;;) { printf(\ scanf(\ if==0) break; d=days(&date); printf(\ } }

310ѧÿѧݰѧš3ſγ̵ijɼӼ10ѧݣҪ3ſγ̵ƽɼԼ߷ֵѧѧš3ſγ̳ɼƽ #include <> #define N 10 struct student {

char num[6];

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