完整word版,《C语言程序设计》课后习题答案(第四版)谭浩强

} }

void aver_cour(void) {int i,j; float s;

for (j=0;j

for (i=0;i

float highest() {float high; int i,j;

high=score[0][0]; for (i=0;ihigh) {high=score[i][j]; r=i+1; c=j+1; }

return(high); }

float s_var(void) {int i;

float sumx,sumxn; sumx=0.0; sumxn=0.0;

for (i=0;i

{sumx+=a_stu[i]*a_stu[i]; sumxn+=a_stu[i]; }

return(sumx/N-(sumxn/N)*(sumxn/N)); } 7-15

#include #include #define N 10

int main()

{void input(int [],char name[][8]); void sort(int [],char name[][8]); void search(int ,int [],char name[][8]); int num[N],number,flag=1,c; char name[N][8]; input(num,name); sort(num,name); while (flag==1)

{printf(\ scanf(\ search(number,num,name); printf(\ getchar(); c=getchar(); if (c=='N'||c=='n') flag=0; } return 0; }

void input(int num[],char name[N][8]) {int i;

for (i=0;i

{printf(\ scanf(\ printf(\ getchar(); gets(name[i]); } }

void sort(int num[],char name[N][8]) { int i,j,min,templ; char temp2[8]; for (i=0;i

for (j=i;j

if (num[min]>num[j]) min=j; templ=num[i];

strcpy(temp2,name[i]); num[i]=num[min];

strcpy (name[i],name[min]); num[min]=templ;

strcpy(name[min],temp2); }

printf(\ for (i=0;i

printf(\ }

void search(int n,int num[],char name[N][8]) {int top,bott,mid,loca,sign; top=0; bott=N-1; loca=0; sign=1;

if ((nnum[N-1])) loca=-1;

while((sign==1) && (top<=bott)) {mid=(bott+top)/2; if (n==num[mid]) {loca=mid; printf(\ sign=-1; } else if (n

if (sign==1 || loca==-1)

printf(\ } 8-1

#include int main()

{ void swap(int *p1,int *p2); int n1,n2,n3; int *p1,*p2,*p3;

printf(\ scanf(\ p1=&n1; p2=&n2; p3=&n3;

if(n1>n2) swap(p1,p2); if(n1>n3) swap(p1,p3); if(n2>n3) swap(p2,p3);

printf(\ return 0; }

void swap(int *p1,int *p2) {int p;

p=*p1; *p1=*p2; *p2=p; } 8-2

#include #include int main()

{void swap(char *,char *);

char str1[20],str2[20],str3[20]; printf(\ gets(str1); gets(str2); gets(str3);

if(strcmp(str1,str2)>0) swap(str1,str2); if(strcmp(str1,str3)>0) swap(str1,str3); if(strcmp(str2,str3)>0) swap(str2,str3); printf(\

printf(\ return 0; }

void swap(char *p1,char *p2) {char p[20];

strcpy(p,p1);strcpy(p1,p2);strcpy(p2,p); } 8-3

#include int main()

{ void input(int *);

void max_min_value(int *); void output(int *); int number[10];

input(number); max_min_value(number); output(number); return 0; }

void input(int *number)

{int i;

printf(\ for (i=0;i<10;i++)

scanf(\ }

void max_min_value(int *number) { int *max,*min,*p,temp; max=min=number;

for (p=number+1;p*max) max=p; else if (*p<*min) min=p;

temp=number[0];number[0]=*min;*min=temp; if(max==number) max=min;

temp=number[9];number[9]=*max;*max=temp; }

void output(int *number) {int *p;

printf(\ \

for (p=number;p

#include int main()

{void move(int [20],int,int); int number[20],n,m,i;

printf(\ scanf(\

printf(\ for (i=0;i

scanf(\

printf(\ scanf(\ move(number,n,m);

printf(\ for (i=0;i

printf(\ \ printf(\ return 0; }