How to initialize an array to all zeros in the C language

You can use a loop statement to assign all elements of an array to 0.

Option 1:
Method 1: Use a for loop to iterate through the array and assign each element to be 0 one by one.

#include <stdio.h>

int main() {
  int arr[5];  // 声明一个包含5个元素的整型数组

  // 使用for循环遍历数组，将每个元素赋值为0
  for (int i = 0; i < 5; i++) {
    arr[i] = 0;
  }

  // 打印数组的值
  for (int i = 0; i < 5; i++) {
    printf("%d ", arr[i]);
  }

  return 0;
}

Option 2: Use the memset function to assign all elements of the array to 0.

#include <stdio.h>
#include <string.h>

int main() {
  int arr[5];  // 声明一个包含5个元素的整型数组

  // 使用memset函数将数组的所有元素赋值为0
  memset(arr, 0, sizeof(arr));

  // 打印数组的值
  for (int i = 0; i < 5; i++) {
    printf("%d ", arr[i]);
  }

  return 0;
}

Both methods can be used to assign all elements of an array to 0. The first method uses a for loop to assign each element one by one, while the second method uses the memset function to set the entire memory block of the array to 0.