c - 动态二维阵列打印C : why does my array only print out a single line

Question

我需要编写一个动态函数，用 C 语言打印二维数组的指定值。这些值需要能够更改，最好是在其他函数中，并且该函数仍应打印正确的显示。因此，我开始在函数本身中分配值并打印这些值，但 2D 结构不会打印出来，所有内容都只在一行上。

这就是我想要的:

  1 2 3 4 5 6   \n
                \n  
  x x x x x x  1\n
  x x x x x x  2\n
  x x x x x x  3\n
  x x x x x x  4\n
  x x x x x x  5\n
  x x x x x x  6\n
                \n
                \n

代码如下:正如你所看到的，我尝试了各种策略......xD

/* assigncleanboard: this function is used to initiate the display board by assigning question marks to all cells in the display board at a new game. */

#include <stdio.h>
#define MAXSIZE 15 

void assigncleanboard(int size) {

    char displayboard[MAXSIZE][MAXSIZE];
    int row=0, col=0;


    for(row=0; row<size; row++) 
    printf("\n");


    if(size<=(MAXSIZE-3) && size>=(MAXSIZE-9)) {

        //for(row=2; row<(size+2); row++) {
        //  displayboard[row][MAXSIZE] = 47+row;
        //  printf(" %c ", displayboard[row][MAXSIZE]);
        //} 



        for(col=0; col<size+3; col++) {
            for(row=0; row<MAXSIZE; row++) {
                if(col == 0 && col == 1 && col == size && col == (size+2) && row == 0 && row == 1 && row == size && row == (size+2) ) {
                    displayboard[row][col] = 32;
                }   
                else {
                    displayboard[row][col] = 88;
                }   
                displayboard[0][col] = 49+col;
                displayboard[row][size+3] = 49+row;
                printf("| %c |", displayboard[row][col]);
            }       
        }   
    }   
        /*

        for(row=2; row<(size+2); row++) {
            for(col=2; col<(size+2); col++)
                displayboard[row][col] = 63;
        } 

                for(row=0; row<size; row++) {
            for(col=0; col<size; col++)     
                displayboard[row][col]=88;
                printf("%c", displayboard[row][col]);
                }

                printf("%c", displayboard[2][MAXSIZE]);

        for(row=2; row<(size+2); row++) {
            for(col=2; col<(size+2); col++)
                printf("%c", displayboard[row][col]);
        } 

        for(row=0; row<size; row++) 
            printf("\n");
    }*/ 

    else 
        printf("Invalid number:\n");

}   

我也尝试过这个:

    if(size<=(MAXSIZE-3) && size>=(MAXSIZE-9)) {

        //for(row=2; row<(size+2); row++) {
        //  displayboard[row][MAXSIZE] = 47+row;
        //  printf(" %c ", displayboard[row][MAXSIZE]);
        //} 



        for(col=0; col<size+4; col++) {
            for(row=0; row<size+4; row++) {
                if(col == 0) 
                    displayboard[row][col] = 32;
                else if(col == 1)
                    displayboard[row][col] = 32;
                else if(col == size)
                    displayboard[row][col] = 32;
                else if(col == size+3)
                    displayboard[row][size+3] = 49+row;     
                else if(row == 0)
                    displayboard[0][col] = 49+col;
                else if(row == 0 && col == size)
                    displayboard[row][col] = 32;
                else if(row == 1 && col == size+3)
                    displayboard[row][col] = 32;
                else 
                    displayboard[row][col] = 88;


                printf(" %c ", displayboard[row][col]);
            }       
        }   
    }   

Answer 1

您的代码应该多次运行 printf，否则您的程序可能会崩溃。你能调试你的代码吗？我运行了下面的代码并得到了多个 printf。

#include <stdio.h>
#define MAXSIZE 15 

void assigncleanboard(void) 
{
    char displayboard[MAXSIZE][MAXSIZE];
    int row = 0, col = 0;

    for(row = 0; row < MAXSIZE; row++) 
    {
        printf("\n");

        for(col = 0; col < MAXSIZE; col++) 
        {
            printf("| %c |", displayboard[row][col]);
        }   
    }
}

编辑:我的打印输出:

| 0.9 || 1.0 || 0.2 || 0.4 || 0.7 || 0.6 || 0.8 || 0.4 || 0.4 || 1.0 || 0.3 || 0.4 || 0.1 || 0.4 || 0.7 |
| 0.4 || 0.5 || 0.9 || 0.4 || 0.9 || 1.0 || 0.7 || 0.1 || 0.2 || 0.3 || 0.4 || 0.5 || 0.6 || 0.1 || 0.1 |
| 0.6 || 0.1 || 0.7 || 0.3 || 0.3 || 0.8 || 0.9 || 0.1 || 0.7 || 0.8 || 0.3 || 0.5 || 0.1 || 0.4 || 0.6 |
| 0.6 || 0.8 || 0.7 || 0.0 || 0.3 || 0.2 || 0.8 || 0.6 || 0.6 || 0.6 || 0.2 || 0.9 || 0.9 || 0.2 || 0.3 |
| 0.0 || 0.2 || 0.3 || 0.3 || 0.4 || 0.2 || 0.7 || 0.8 || 0.0 || 0.9 || 0.5 || 0.4 || 0.3 || 0.7 || 0.6 |
| 0.5 || 0.6 || 0.7 || 0.6 || 0.7 || 0.6 || 0.8 || 0.6 || 0.8 || 0.9 || 0.8 || 0.6 || 0.1 || 0.7 || 0.2 |
| 0.9 || 1.0 || 0.9 || 0.4 || 0.7 || 0.1 || 0.2 || 0.8 || 0.0 || 0.4 || 0.9 || 0.1 || 0.7 || 0.1 || 0.8 |
| 0.8 || 0.6 || 0.9 || 0.9 || 0.1 || 0.5 || 0.2 || 0.3 || 0.5 || 0.7 || 0.2 || 0.6 || 0.5 || 0.4 || 0.6 |
| 0.6 || 0.6 || 0.1 || 0.9 || 0.0 || 0.5 || 0.5 || 0.9 || 0.9 || 0.5 || 0.3 || 0.8 || 0.7 || 0.2 || 0.8 |
| 0.5 || 0.2 || 0.4 || 1.0 || 0.1 || 0.2 || 0.7 || 0.2 || 0.6 || 0.6 || 0.7 || 0.7 || 0.5 || 0.7 || 0.5 |
| 0.5 || 0.7 || 0.4 || 0.4 || 0.8 || 0.2 || 1.0 || 0.8 || 0.1 || 0.3 || 0.3 || 0.7 || 1.0 || 0.4 || 0.9 |
| 0.7 || 0.5 || 0.1 || 0.6 || 0.2 || 0.0 || 0.2 || 0.5 || 0.3 || 0.4 || 0.9 || 0.5 || 0.5 || 0.2 || 0.3 |
| 0.9 || 0.0 || 0.2 || 0.4 || 1.0 || 0.5 || 0.4 || 0.3 || 0.5 || 0.6 || 0.6 || 0.4 || 0.4 || 0.7 || 0.8 |
| 0.5 || 0.7 || 0.7 || 0.7 || 0.9 || 0.2 || 0.6 || 0.8 || 0.5 || 0.5 || 0.3 || 0.2 || 0.2 || 1.0 || 0.8 |
| 0.8 || 0.4 || 0.6 || 0.7 || 0.5 || 0.3 || 0.5 || 0.6 || 0.5 || 0.3 || 0.3 || 0.2 || 0.6 || 0.0 || 0.6 |