GDB打印二维数组

• 打印数组 p *matrix@length
• 打印二维数组 p *matrix@cols@rows
• 打印二维数组 printMatrix matrix cols rows

  define printMatrix
    set $arr = $arg0
    set $rows = $arg1
    set $cols = $arg2
    set $i = 0
    printf "\n"
    while $i < $rows
        set $j = 0
        while $j < $cols
            printf "%02d, ",$arr[$i][$j]
            set $j = $j + 1
        end
        printf "\n"
        set $i = $i + 1
    end
  end

source code

#include <stdio.h>

int matrix[10][10];

void print(int matrix[10][10])
{
    int i, j;
    for (i = 0; i < 10; ++i)
    {
        for (j = 0; j < 10; ++j)
            printf("%d ", matrix[i][j]);
        printf("\n");
    }
}

int main()
{
    int i, j;
    for (i = 0; i < 10; ++i)
        for (j = 0; j < 10; ++j)
            matrix[i][j] = i*10 + j;
    return 0;
}

Example

(gdb) p *matrix[1]@10
$6 = {10, 11, 12, 13, 14, 15, 16, 17, 18, 19}
(gdb) p *matrix[1]@5@2
$7 = {{10, 11, 12, 13, 14}, {15, 16, 17, 18, 19}}
(gdb) source a.gdb
(gdb) printMatrix matrix 10 10

00, 01, 02, 03, 04, 05, 06, 07, 08, 09,
10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
30, 31, 32, 33, 34, 35, 36, 37, 38, 39,
40, 41, 42, 43, 44, 45, 46, 47, 48, 49,
50, 51, 52, 53, 54, 55, 56, 57, 58, 59,
60, 61, 62, 63, 64, 65, 66, 67, 68, 69,
70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
80, 81, 82, 83, 84, 85, 86, 87, 88, 89,
90, 91, 92, 93, 94, 95, 96, 97, 98, 99,