C 程序设计第六章答案

using namespace std;
void min (int array[], int size);
int main ()
{
int array[8] = {2,2,4,5,10,100,2,2};
min(array,8);
return 0;
}
//打印最小元的下标
void min (int array[], int size)
int main ()
{
double arrays[7] = {6.0,4.4,1.9,2.9,3.4,2.9,3.5};
turn(arrays, 7);
for (int i = 0; i < 7; i++)
{
cout << arrays[i] << " ";
}
system("pause");
return 0;
cout << "The average scores among " << count << " students is "<< average << endl;
cout << "There are(is) " << upcount << " student's(s') scores are(is) higher than average.\n";
cout << "There are(is) " << equalcount << " student's(s') scores are(is) equal to average.\n";
cout << "There are(is) " << downcount << " student's(s') scores are(is) lower than average.\n";
cout << "You have entered " << count << " scores\n";
cin >> j;
if ((j >= 0) && (j <= 100))
{
score[i] = j;
j++;
count++;
i++;
}
else if (j > 100)
{
cout << "You should enter a correct score";
cout <<"关键字的下标是"<< i <<endl;
}
}
long endTime1 = time(0);
long time1 = endTime1 - startTime1;
cout << "顺序搜索时间是" << time1 <<"秒\n\n";
//二分搜索
int low = 0;
int high = 99999;
return 0;
}
练习6.6
代码如下：
#include <iostream>
#include <iomanip>
using namespace std;
bool isPrime (int num);
int main ()
{
int prime[50];
for (int i = 0, num = 2; i < 50; num++)
{
if (0 == num %i)
{
isPrime = false;
break;
}
}
return isPrime;
}
练习6.8
代码如下：
#include <iostream>
using namespace std;
int average(int array[], int size);
double average(double array[], int size);
{
cout << array[i] << endl;
}
return 0;
}
练习6.14
代码如下：
#include <iostream>
#include <ctime>
using namespace std;
int main ()
{
int num[];
srand ( time(0) );
for (long i = 0; i < ; i++)
cin >> num;
//if number entered > max, max = num, count = 1 again.
if (num > max)
{
max = num;
count = 1;
}
else if (num == max)
{
count++;}ຫໍສະໝຸດ }//display
cout << "The largest number is " << max <<endl;
{
if (score[i] > average)
{
upcount++;
}
else if (score[i] == average)
{
equalcount++;
}
else if (score[i] < average)
{
downcount++;
}
}
//display the result
cout << "The summer scores among " << count << " students is " << sum << endl;
{
int min = array[0];
int xiabiao[10];
int j = 0;
for (int i = 0; i < size; i++)
{
if ( array[i] <= min )
{
min = array[i];
xiabiao[j] = i;
j++;
}
}
int k = j;
j = 0;
}
}
练习6.12
代码如下：
#include <iostream>
using namespace std;
void reverse (int soure[], int size);
//swap
void reverse (int soure[], int size)
{
for (int i = 0; i < (size / 2); i++)
{
high = mid - 1;
}
else if (key == num[mid])
{
cout << "关键字下标是" << mid << endl;
break;
}
else
{
low = mid + 1;
}
}
long endTime2 = time(0);
long time2 = endTime2 - startTime2;
return 0;
}
//the kind of integer
int average(int array[], int size)
{
double sum = 0;
for (int i = 0; i < size; i++)
{
sum += array[i];
}
return sum / size;
}
//the kind of integer
i = 0, j = 0, sum = 0;
//input the arrays, and when user enter a minus, stop inputing
do
{
cout << "Please enter less than 40 students' score, if you want to stop entering you can enter a minus.\n";
int main ()
{
int array1[6] = {1,2,3,4,5,6};
double array2[7] = {6.0,4.4,1.9,2.9,3,4,3.5};
//display the result
cout << average(array1,6) << endl << average(array2,7) << endl;
实验六数组