// 冒泡排序.cpp : 定义控制台应用程序的入口点。
//比较相邻两个元素，若第一个比第二个大，就交换两个元素
#include "stdafx.h"
#include<iostream>
using namespace std;
int main()
{
const int N = 7;
int bubble[N];
cout << "输入数字：";
for (int i = 0; i < N; i++)
{
cin >> bubble[i];
}
cout << endl;
for (int i = 0; i < N; i++)//控制循环次数
{
//int max = bubble[i];
for (int j = 0; j < N - i-1; j++)
{
if (bubble[j] > bubble[j+1])
{
int temp;
temp = bubble[j];
bubble[j] = bubble[j+1];
bubble[j + 1] = temp;
}
}
//bubble[N - i - 1] = max;
}
cout << "从小到大的顺序为：";
for (int i = 0; i < N; i++)
{
cout<< bubble[i]<<" ";
}
system("pause");
return 0;
}
// 选择排序.cpp : 定义控制台应用程序的入口点。
//一个序列当中选出一个最大的（升序为最小的），然后和第一个元素交换。
#include "stdafx.h"
#include<iostream>
using namespace std;
int main()
{
const int N = 7;
int bubble[N];
cout << "输入数字：";
for (int i = 0; i < N; i++)
{
cin >> bubble[i];
}
cout << endl;
int min;
for (int i = 0; i < N; i++)
{
min = bubble[i];
int temp;
for (int j = i; j < N; j++)
{
if (min > bubble[j])
{
temp = min;
min = bubble[j];
bubble[j] = temp;
}
}
bubble[i] = min;
}
cout << "从小到大的顺序为：";
for (int i = 0; i < N; i++)
{
cout << bubble[i] << " ";
}
system ("pause");
return 0;
}
// 二维数组.cpp : 定义控制台应用程序的入口点。
#include "stdafx.h"
#include <iostream>
#include <string>
using namespace std;
int main()
{
string stu_name[] = { "张三","李四","王五" };
string course[] = { "语文","数学","英语" };
const int row = sizeof(stu_name) / sizeof(stu_name[0]);
const int col = sizeof(course) / sizeof(course[0]);
double grade[row][col];
for (int i = 0; i < row; i++)
{
for (int j = 0; j < row; j++)
{
cout << stu_name[i] << "的成绩：" << course[j] << "：";
cin >> grade[i][j];
}
cout << endl;
}
cout << "总成绩单为：" << endl;
cout <<" \t";
for (int i=0;i<row;i++)
{
cout << stu_name[i] << "\t";
}
cout << endl;
for (int j = 0; j < row; j++)
{
cout << course[j] << "\t";
for (int k = 0; k < row; k++)
{
cout << grade[0][k] << "\t";
}
cout << endl;
}
system("pause");
return 0;
}
//将二维数组作为参数传入函数，利用指针计算学生总分，不及格名单及平均分等
//int无法强制转换成double类型
//解释,尽管我没看懂https://blog.csdn.net/qq_39632912/article/details/79124330
// 成绩统计.cpp : 定义控制台应用程序的入口点。
#include "stdafx.h"
#include <iostream>
using namespace std;
double average(double **array, int m, int n);
void fail(double **array, int m, int n);
void great(double **array, int m, int n);
int main()
{
double grade[5][6] = { { 1,74,75,78,79,85 },
{ 2,45,41,42,47,85 },
{ 3,75,74,71,12,13 },
{ 4,99,83,98,85,89 },
{ 5,94,95,96,95,91 } };; //行表示学生，列表示课程,5行6列
/*
grade[5][6] = {{ 1,74,75,78,79,85},
{ 2,45,41,42,47,85},
{ 3,75,74,71,12,13},
{ 4,14,12,74,45,89},
{ 5,74,75,76,85,81}};
*/
/*cout << "请输入学生的学号和各科成绩！" << endl;
for (int i = 0; i < 5; i++)
{
cout << "请输入学生" << i + 1 << "的学号:";
cin >> grade[i][0];
cout << "请输入学生" << i + 1 << "的成绩:";
for (int j = 1; j < 6; j++)
{
cin >> grade[i][j];
}
cout << endl;
}*/
cout << "所有学生的平均成绩为："<<average((double**)grade,5,6) << endl;
fail((double**)grade, 5, 6);
great((double**)grade, 5, 6);
system("pause");
return 0;
}
double average(double **array, int m, int n)
{
double all=0; //int/double类型转换？
double aver;
int num = (m - 1)*(n - 1);
for (int i = 0; i < m; i++)
{
for (int j = 1; j < n; j++)
{
all += *((double*)array + i*n + j);
}
}
aver = all / num;
return aver;
}
void fail(double **array, int m, int n)
{
for (int i = 0; i < m; i++)
{
int num = 0; //用来记录每个人不及格的次数
int all = 0; //记录每个人的总分
for (int j = 1; j < n; j++)
{
if (*((double*)array + i*n + j) < 60)
num++;
all += *((double*)array + i*n + j);
}
if (num > 2)
{
cout << *((double*)array+ i*n) << "的总成绩为："
<< all << ",其中平均成绩为:" << all / 5 << endl;
}
}
}
void great(double **array, int m, int n)
{
int all=0;
double ave;
for (int i = 0; i < m; i++)
{
for (int j = 1; j < n; j++)
{
all += *((double*)array + i*n + j);
}
ave = all / 5;
if(ave>90)
cout << *((double*)array + i*n) << "平均分高于90！优秀！"<< endl;
else
{
for (int j = 1; j < n; j++)
{
if (*((double*)array + i*n + j) < 85)
break;
else if(j=n-1)
cout << *((double*)array + i*n) << "全部课程高于85！优秀！" << endl;
}
}
all = 0;
}
}