回答編集履歴
3
d
answer
CHANGED
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@@ -43,12 +43,11 @@
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43
43
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44
44
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void print_array(const Mat &mat)
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45
45
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{
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46
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-
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47
46
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for (size_t i = 0; i < mat.size(); ++i) {
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48
47
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for (size_t j = 0; j < mat[0].size(); ++j) {
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49
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-
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48
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+
std::cout << mat[i][j] << " ";
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50
49
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}
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51
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-
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50
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+
std::cout << std::endl;
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52
51
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}
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53
52
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}
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54
53
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@@ -64,5 +63,4 @@
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64
63
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65
64
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return 0;
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66
65
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}
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67
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-
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68
66
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```
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2
d
answer
CHANGED
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@@ -29,4 +29,40 @@
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29
29
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return 0;
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30
30
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}
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31
31
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32
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+
```
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33
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+
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34
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+
## vector で書き直した例
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35
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+
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36
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+
C++ なら C の配列でなく、std::vector を使ったほうがよいでしょう。
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37
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+
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38
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+
```cpp
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39
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+
#include <iostream>
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40
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+
#include <vector>
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41
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+
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42
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+
using Mat = std::vector<std::vector<int>>;
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43
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+
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44
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+
void print_array(const Mat &mat)
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45
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+
{
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46
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+
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47
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+
for (size_t i = 0; i < mat.size(); ++i) {
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48
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+
for (size_t j = 0; j < mat[0].size(); ++j) {
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49
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+
printf("%d ", mat[i][j]);
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50
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+
}
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51
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+
printf("\n");
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52
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+
}
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53
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+
}
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54
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+
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55
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+
int main()
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56
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+
{
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57
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+
Mat mat{
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58
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+
{1, 2, 3},
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59
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+
{4, 5, 6},
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60
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+
{7, 8, 9},
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61
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+
};
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62
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+
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63
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+
print_array(mat);
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64
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+
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65
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+
return 0;
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66
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+
}
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67
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+
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32
68
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```
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1
e
answer
CHANGED
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@@ -5,11 +5,11 @@
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5
5
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```c
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6
6
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#include "stdio.h"
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7
7
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8
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-
void print_array(int array[][3], size_t
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8
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+
void print_array(int array[][3], size_t rows)
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9
9
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{
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10
10
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|
|
11
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+
for (size_t i = 0; i < rows; ++i) {
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11
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-
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12
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+
for (size_t j = 0; j < 3; ++j) {
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12
|
-
for (size_t j = 0; j < cols; ++j) {
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13
13
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printf("%d ", array[i][j]);
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14
14
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}
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15
15
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printf("\n");
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