Question

我不明白为什么没有找到每一行的最大值这是打印出来的：输入第一场比赛的得分：7.5 9.3 8.5 7.2 10.0

输入第二场比赛的得分：8.1 7.8 9.2 10.0 7.7

输入第3场比赛的得分：8.5 6.7 8.7 9.4 8.2

输入第4场比赛的分数：7.4 9.3 9.6 8.9 9.1

输入第5场比赛的得分：8.5 7.7 9.7 8.3 8.4

比赛的胜利者＃1 10

比赛的胜者＃2 10

比赛的获胜者＃3 10

比赛的获胜者＃4 10

比赛＃5 10的获胜者

这是我的代码：

#include <iostream>
#include <iomanip>
using namespace std;

const int COLS = 5;
const int ROWS = 5;

int main()
{
    const int scores = 25;

    double competition[scores];

    cout << "Enter the scores of the 1st competition: ";
    cin >> competition[0];
    cin >> competition[1];
    cin >> competition[2];
    cin >> competition[3];
    cin >> competition[4];

    cout << "Enter the scores of the 2nd competition: ";
    cin >> competition[5];
    cin >> competition[6];
    cin >> competition[7];
    cin >> competition[8];
    cin >> competition[9];

    cout << "Enter the scores of the 3rd competition: ";
    cin >> competition[10];
    cin >> competition[11];
    cin >> competition[12];
    cin >> competition[13];
    cin >> competition[14];

    cout << "Enter the scores of the 4th competition: ";
    cin >> competition[15];
    cin >> competition[16];
    cin >> competition[17];
    cin >> competition[18];
    cin >> competition[19];

    cout << "Enter the scores of the 5th competition: ";
    cin >> competition[20];
    cin >> competition[21];
    cin >> competition[22];
    cin >> competition[23];
    cin >> competition[24];

 double table[ROWS][COLS] = {{competition[0], competition[1], competition[2], competition[3], competition[4]},
                             {competition[5], competition[6], competition[7], competition[8], competition[9]},
                             {competition[10], competition[11], competition[12], competition[13], competition[14]},
                             {competition[15], competition[16], competition[17], competition[18], competition[19]},
                             {competition[20], competition[21], competition[22], competition[23], competition[24]}};

    double max = competition[0];

for (int j = 0, k = 1; j < COLS; j++)
{
    cout << "the winner of competition #" << k++ << " ";
    for (int i = 0; i < ROWS; i++)
    {
        if (table[i][j] > max)
        {
            max = table[i][j];
        }
    }
    cout << max << endl;
}
    return 0;
}

Answer 1

您需要在发现最大值后重置最大值，最好为0，假设可能达到的最低分数为0.如果您没有重置，则最大值将始终与10相比，并始终返回10。

通常，在尝试查找max时，始终将其初始化为其所具有的数据类型的最小可能值。例如，对于int，这是INT_MIN。您可以在here中找到浮点数和双精度数的等效值。

c ++试图找到数组中每一行的最大值

1 个答案: