c - 使用数组和随机数循环打印一个简单的 5 x 5 板

Question

我之前在Generating Unique Random Numbers in an Array using Loop问过一个非常复杂的问题

但是我发现我还不能理解所有的概念，未知的东西太多，所以我决定一步步学习。

所以现在我正在尝试使用带有随机数的数组创建一个 5x5 板..这是我的代码:

    #include <stdio.h>
    #include <stdlib.h>
    #include <time.h>

    //Declare the board size and other variables//

    //Create the random number generator seed

    //Loop to create the wanted board size

    //Plant the random numbers into the board within the loop

    int main()

    {
    //Initialize Variables
    int randomNumber;
    int rows;
    int columns;

    //Declare board size. Size of board is 5 x 5
    int board[5][5]; 

    //Create the random number generator seed
    srand(time(NULL));

    //Assign the random numbers from 1 - 25 into variable randomNumber
    randomNumber = rand() %25 + 1;

    //Create the rows for the board
        for ( rows = 1; rows <= 5 ; rows++ )
        {
            //Create the columns for the board
            for ( columns = 1; columns <= 5 ;  columns++ )
             {
             //Assign variable randomNumber into variable board
             board[randomNumber][randomNumber];
        }
            //Newline after the end of 5th column.
            printf("\n");
    }

    //Print the board
    printf("%d\t", board[randomNumber][randomNumber]);

}//end main

最后一部分board[randomNumber][randomNumber];是我认为我真的很困惑的地方。我真的不知道该怎么办。

我正在尝试将随机数分配到棋盘中，但我犯了严重错误。

各位有什么指点吗？

Answer 1

尝试这样的事情:

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

//Declare the board size and other variables//

//Create the random number generator seed

//Loop to create the wanted board size

//Plant the random numbers into the board within the loop

int main()

{
//Initialize Variables
int randomNumber;
int rows;
int columns;

//Declare board size. size of board is 5 x 5
int board[5][5]; 

//Create the random number generator seed
srand(time(NULL));

//Assign the random numbers from 1 - 25 into variable randomNumber

//Create the rows for the board
    for ( rows = 0; rows < 5 ; row++ )
    {
        //Create the columns for the board
        for ( columns = 0; columns < 5 ;  columns++ )
         {
         //Assign variable randomNumber into variable board
         randomNumber = rand() %25 + 1;

         board[rows][columns] = randomNumber;
         printf("%d\t", board[rows][columns]);

    }
        //Newline after the end of 5th column.
        printf("\n");
}

}//end main

您需要使用=运算符将生成的编号分配给板。您所做的只是在 1-25 范围内随机排列行和列 - 所以大多数时候您可能会在这里得到异常，如果它有效，您的数组不会被填充，因此默认情况下会有值(因为您的数组是在方法内部定义的，里面有一些随机值，但你不能确定里面有什么，直到你用值填充它)