memset二维数组初始化

使用memset函数初始化二维数组时需要注意以下几点：首先，对于二维整型数组，memset函数只能将数组初始化为0或者-1，否则数组的值将会是随机数；而对于二维char数组，memset函数则可以将数组初始化为任意字符。其具体写法如下：

#include <bits/stdc++.h>
using namespace std;
const int m = 3;
const int n = 5;
char a[m][n]; // char数组
int main() {
    memset(a, '*', sizeof(a)); // 此处的星号*可改为任意字符
    for (int i = 0; i < m; i++) {
        for (int j = 0; j < n; j++) {
            cout << a[i][j << " ";
        }
        cout << endl;
    }
    return 0;
}

在上述代码中，使用`memset(a, '*', sizeof(a))`将二维char数组a初始化为*字符。注意，这里的`'*'`可以改为任意字符。运行代码后，即可将二维数组a的所有元素都初始化为相应字符。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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