求解c++的程序设计问题

在网上找了很多相关的但都是c没有c++,好多看不懂的,希望有大佬能帮我解答下如何入手菜单和信息的录入图片

c++

4个回答

这里的菜单应该不是GUI,你需要了解如何控制光标的位置(用来打印菜单);信息录入一般的设计可以设计成标准输入的形式,不过后面需要文件中导出学生信息,需要了解c++文件流
这些东西搜一下就有了,需要注意题目的要求都是以“学生信息”为主体,你需要将其封装起来。

界面的话,用Qt做C++的界面很简单,而且网上有很多案例,Qt的界面好多都是可以图形化操作的很容易上手。代码的话,感觉楼主的这道题很中规中规,不是很难。

(我没有认真看题哈,我是根据我的经验来说的)菜单的话,在Qt下面也可以图形化操作,信息录入的话,就是先创建好学生类在每一个输入栏里面把你所要的信息先用QString转化string类型或者int类型你所想要的类型了,用set函数赋值就行了啊

我这里有你要的东西,刚给朋友做的

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求解c++的程序设计问题
在网上找了很多相关的但都是c没有c++,好多看不懂的,希望有大佬能帮我解答下如何入手菜单和信息的录入![图片](https://img-ask.csdn.net/upload/201706/20/1497923151_320776.jpg)
立方体的一个遍历的问题求解,怎么采用C语言的程序的设计的技术的编写的程序怎么做
Problem Description On a small planet named Bandai, a landing party of the starship Tadamigawa discovered colorful cubes traveling on flat areas of the planet surface, which the landing party named beds. A cube appears at a certain position on a bed, travels on the bed for a while, and then disappears. After a longtime observation, a science officer Lt. Alyssa Ogawa of Tadamigawa found the rule how a cube travels on a bed. A bed is a rectangular area tiled with squares of the same size. One of the squares is colored red, one colored green, one colored blue, one colored cyan, one colored magenta, one colored yellow, one or more colored white, and all others, if any, colored black. Initially, a cube appears on one of the white squares. The cube’s faces are colored as follows. top red bottom cyan north green south magenta east blue west yellow The cube can roll around a side of the current square at a step and thus rolls on to an adjacent square. When the cube rolls on to a chromatically colored (red, green, blue, cyan, magenta or yellow) square, the top face of the cube after the roll should be colored the same. When the cube rolls on to a white square, there is no such restriction. The cube should never roll on to a black square. Throughout the travel, the cube can visit each of the chromatically colored squares only once, and any of the white squares arbitrarily many times. As already mentioned, the cube can never visit any of the black squares. On visit to the final chromatically colored square, the cube disappears. Somehow the order of visits to the chromatically colored squares is known to us before the travel starts. Your mission is to find the least number of steps for the cube to visit all the chromatically colored squares in the given order. Input The input is a sequence of datasets. A dataset is formatted as follows: w d c11 · · · cw1 ... ... c1d · · · cwd v1v2v3v4v5v6 The first line is a pair of positive integers w and d separated by a space. The next d lines are w-character-long strings c11 · · · cw1,. . . , c1d · · · cwd with no spaces. Each character cij is one of the letters r, g, b, c, m, y, w and k, which stands for red, green, blue, cyan, magenta, yellow, white and black respectively, or a sign #. Each of r, g, b, c, m, y and # occurs once and only once in a dataset. The last line is a six-character-long string v1v2v3v4v5v6 which is a permutation of “rgbcmy”. The integers w and d denote the width (the length from the east end to the west end) and the depth (the length from the north end to the south end) of a bed. The unit is the length of a side of a square. You can assume that neither w nor d is greater than 30. Each character cij shows the color of a square in the bed. The characters c11, cw1, c1d and cwd correspond to the north-west corner, the north-east corner, the south-west corner and the southeast corner of the bed respectively. If cij is a letter, it indicates the color of the corresponding square. If cij is a #, the corresponding square is colored white and is the initial position of the cube. The string v1v2v3v4v5v6 shows the order of colors of squares to visit. The cube should visit the squares colored v1, v2, v3, v4, v5 and v6 in this order. The end of the input is indicated by a line containing two zeros separated by a space. Output For each input dataset, output the least number of steps if there is a solution, or “unreachable” if there is no solution. In either case, print it in one line for each input dataset. Sample Input 10 5 kkkkkwwwww w#wwwrwwww wwwwbgwwww kwwmcwwwkk kkwywwwkkk rgbcmy 10 5 kkkkkkkkkk k#kkkkkkkk kwkkkkkwwk kcmyrgbwwk kwwwwwwwwk cmyrgb 10 5 kkkkkkkkkk k#kkkkkkkk kwkkkkkwkk kcmyrgbwwk kwwwwwwwwk cmyrgb 0 0 Sample Output 9 49 unreachable
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数据结构队列问题的综合的运用计算,怎么采用C语言的程序设计的方法来编写的代码实现算法的求解?
Problem Description This is back in the Wild West where everybody is fighting everybody. In particular, there are n cowboys, each with a revolver. These are rather civilized cowboys, so they have decided to take turns firing their guns until only one is left standing. Each of them has a given probability of hitting his target, and they all know each other’s probability. Furthermore, they are geniuses and always know which person to aim at in order to maximize their winning chance, so they are indeed peculiar cowboys. If there are several equally good targets, one of those will be chosen at random. Note that a cowboy’s code of ethics forces him to do his best at killing one of his opponents, even if intentionally missing would have increased his odds (yes, this can happen!) Input On the first line of the input is a single positive integer t, telling the number of test cases to follow. Each case consists of one line with an integer 2 ≤ n ≤ 13 giving the number of cowboys, followed by n positive integers giving hit percentages for the cowboys in the order of their turns. Output For each test case, output one line with the percent probabilities for each of them surviving, in the same order as the input. The numbers should be separated by a space and be correctly rounded to two decimal places. Sample Input 5 2 1 100 3 100 99 98 3 50 99 100 3 50 99 99 3 50 99 98 Sample Output 1.00 99.00 2.00 0.00 98.00 25.38 74.37 0.25 25.38 49.50 25.12 25.63 24.63 49.74
数列分段判断的算法问题求解,怎么利用C语言的程序设计思想的方式去实现算法呢?
Problem Description Zty has met a big problem.His X Gu Niang was kidnaped by a secret organization.The organization only left Zty a letter: "If you can beat our boss ,we will give her the freedom,or..." The boss of the organization was so secret that no one knows his name.We only know that he was so powerful,and Zty is not powerful enough now,what he need to do is to train and to get more experience(Exp).Then he found a place wonderful for traning,There are N enemies there with different Exp,and Zty has M power ball,the number of power ball he used will effect the probability he beat the enemy.These probabilities are given as percentages pij, where i (with 1 ≤ i ≤ N) is the number of the enemy and j is the quantity of power balls used on it.One power ball can be used only once. Zty has to level up to 99,then he will be able to beat the boss.Of cause he is level 1 at the begining.He want to know weather the maximal expected Exp he can get is enough.The expected Exp is calculated as Sum(P(i)*Exp) where P is the probability. The Exp Zty need to level up one level is K/100 , and K will be given. Notice that: If Zty doesn't used a power ball,the probability he beat the enemy is 0. ^_^ Input The first line contain a T ,then T cases followed.Each test case has the following format: One line with one integer K <= 100000: as the description means. One line with one integer N with 1 ≤ N ≤ 100: the number of enemies. One line with one integer M with 0 ≤ M ≤ 100: the maximal number of available power ball. One line with N integers indicating the Exp of the N enemies. N lines, each line corresponding to a enemy i, containing n integers pi1, pi2, …, pim (the percentages, with 0 ≤ pi1, pi2, …, pim ≤ 100). Output If the maximal expected Exp Zty can get is enough for him to level up tp 99,then ouput "Love you Ten thousand years.",else ouput"Cry,men,not crime." Sample Input 2 1000 2 4 8 975 85 94 93 100 0 0 100 100 1000 1 4 979 0 0 0 100 Sample Output Love you Ten thousand years. Cry,men,not crime.
求概率的系数的一个问题的求解,利用C语言的程序的设计的方式怎么做的
Problem Description As the chief consultant in the International Consulting Company, you’re now enjoying such a high reputation in the industry that even the organizations underworld often come to you and ask for your suggestions. Professional as you are to your clients, you always try your best to help them and, certainly, make more profits for yourself. Money makes the mare go, and you’re no exception either. But the shareholders of the company are always watching their profits as well. In order to protect the investors, they keep focusing on every project you take charge of. Once you receive money in a project, they will come immediately to you. If your profit is less than M dollars, they won’t step in; but if the profit reaches M , they will meddle in and take away profits in unit of M as much as possible. (e.g. if you earn (2M + 1) or exactly 2M dollars, they will both take 2M away.) Now a big client comes. A famous robbery organization expects you to help them construct a robbery plan. The offer is so irresistible that you accept it immediately. Their targets are the banks in the city. Totally, there’re K banks (numbered from 1 to K) that located at different areas, which produce different difficulties to rob them. The robbery team is made up of N people, and they have totally Q dollars as action funds. In a robbery, if they send p people and spend d dollars of funds to rob bank i, they will earn fi[p, d] in this action. Here, fi[p, d] is generated by fi[p, d] =0 (p <= 0 or d <= 0) fi[p, d] = fi[p - 1, d - ei] + fi[p - 1, d] (1 < p <= N,1 <= d <= Q) and fi[1, d] comes from fi[1, d] = Aif2i[1, d - 1] + Bifi[1, d - 1] + Ci (1 <= d <= Q) where ei, Ai, Bi, Ci are coefficients given initially. The team is so professional (as you are) that the members always succeed in robberies. After they rob a bank and get the money, the team will divide it into (almost) equal parts and distribute them to you and everyone who participates in this action. That is, if they send p men and rob X dollars, you’ll receive dollars immediately after the robbery on this bank. But at the time you receive the money, the damned shareholders will come and take away the part of theirs. Only the remaining part belongs to you. You’re now required to help them determine the plan. Note that the robberies won’t take place simultaneously; and thus each person can rob several banks, but each bank can be robbed at most once (if we choose to rob it). The money they rob won’t be added to their action funds afterwards. Your final profit equals to the sum of profits that belongs to you after each robbery (Note that your total profit will not be checked again by the shareholders, i.e. your total profit may exceed M ). Your target, professionally speaking, is to maximize the total profit of yourself after they finish robbing the banks according to your plan. Be careful of the annoying shareholders in the company! Input The input consists of several test cases. The first line of input gives the number of test cases T (T<=5). For each test case: The first line consists of four integers N, Q, K(1<=N<=1000, 1<=Q<=20, 1<=K<=50) and M (1<=M<=106). The following K lines describe the property of banks, where the ith line contains ei, Ai, Bi, Ci(1<=ei<=Q, 1<=Ai, Bi, Ci<=109) in order. Output For each test case, output the maximum profits you can obtain in a line. Sample Input 1 80 10 1 1000000 1 988123 894129 102939 Sample Output 999996
字母构成的图形的编写,怎么采用C语言的程序的设计的步骤和方式来求解这个问题的
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循环小数的求解得到的概率问题的算法,运用C语言的程序的设计的方式如何实现
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一个rank的分类的一个算法的问题,用了C语言的程序的设计怎么求解的
Problem Description As we all know, after a series of international contests, the leaders are wild about ranking the schools to appraise the development of the ACM of our country. There are a lot of schools attend the contests, and each school has some teams or none, and each team may get some prizes of not. There are three kinds of prizes of the contests: gold, silver and copper, and gold is the best one and silver is better than copper. Now we get the result of all the schools, you should rank them, and print them according to the below rules: 1) We define the ranks between any two schools (or two teams) as the follow rules: firstly we compare the number of gold prizes, and the school is better whose number of gold prizes is larger, and if the numbers of gold prize are the same then compare the silver prizes and then copper prizes. If all the numbers of gold prizes and silver prizes and copper prizes are the same, then we just say the two school (or two teams) are the same good, and their ranks are the same, you have to obey the lexicographic orders when you print them, though. 2) We define the rank number as the following rule: if there are three schools (or three teams), A is as good as B, but better than C. So the rank number of A and B is 1 (the rank number starts from 1), and C is 3, we omit the rank number 2. If more, the rule goes on. Input There are T cases come, and the first line contains just one integer T. In each case of following T ones, there is an integer N indicates that there are N following lines describe the information of the encouragement. Each line contains fours strings: the name of the school, the name of the team, the kind of the prize ("none" means the team gets no prize), and the contest hosting place. Any string is no longer than fifty characters. T<=10, N <=200, and the school number will not be beyond N, and the team number of each school will not exceed 100. Output For each case, firstly you show the number of school, and then show the rank list as the format: the school name, the rank number, and the numbers of gold prize and silver prize and copper prize. Then you print the teams' information: the team name, the rank number, the numbers of gold prize and silver prize and copper prize. After printing the rank list, firstly you print the number of the contests, and then you have to print the contest information: the name of hosting place (shown lexicographically), the number of gold prize, and the number of silver prize and copper. You can assume all the data is correct. Sample Input 1 4 aaa mayday gold nanjing bbb let's_go silver beijing ccc how_do_you_do??? none xihua aaa acm.hdu.edu.cn copper xihua Sample Output Case 1: **************** school number: 3 aaa 1 1 0 1 team number: 2 mayday 1 1 0 0 acm.hdu.edu.cn 2 0 0 1 bbb 2 0 1 0 team number: 1 let's_go 1 0 1 0 ccc 3 0 0 0 team number: 1 how_do_you_do??? 1 0 0 0 **************** contest number: 3 beijing 0 1 0 nanjing 1 0 0 xihua 0 0 1 ****************
信号的干涉的一个算法问题,怎么用C程序的设计的语言来求解的呢
Problem Description Two countries A-Land and B-Land are at war. The territory of A-Land is a simple polygon with no more than 500 vertices. For military use, A-Land constructed a radio tower (also written as A), and it's so powerful that the whole country was under its signal. To interfere A-Land's communication, B-Land decided to build another radio tower (also written as B). According to an accurate estimation, for any point P, if the euclidean distance between P and B is no more than k (0.2 ≤ k < 0.8) times of the distance between P and A, then point P is not able to receive clear signals from A, i.e. be interfered. Your task is to calculate the area in A-Land's territory that are under B-Land's interference. Input There are no more than 100 test cases in the input. In each test case, firstly you are given a positive integer N indicating the amount of vertices on A-Land's territory, and an above mentioned real number k, which is rounded to 4 digits after the decimal point. Then N lines follow. Each line contains two integers x and y (|x|, |y| ≤ 1000), indicating a vertex's coordinate on A's territory, in counterclockwise or clockwise order. The last two lines of a test case give radio tower A and B's coordinates in the same form as vertexes' coordinates. You can assume that A is not equal to B. Output For each test case, firstly output the case number, then output your answer in one line following the format shown in sample. Please note that there is a blank after the ':'. Your solution will be accepted if its absolute error or relative error is no more than 10-6. This problem is special judged. Sample Input 4 0.5000 -1 -1 1 -1 1 1 -1 1 0 0 -1 0 Sample Output Case 1: 0.2729710441
最接近的分数怎么求解,用的是C语言的程序的编写的设计的代码的过程的计算的方式是什么
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