在C语言中，变量的隐式初始化为0或1

#include <stdio.h>
#include <stdlib.h>
x, y, array[3]; // implicit initialization of some variables
int main(i) {
   //The argument i will hold 1
   int index;
   printf("x = %d, y = %d</p><p></p>
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                <p>", x, y);
   for(index = 0; index < 3; index++)
      printf("Array[%d] = %d</p><p>", i, array[i]);
      printf("The value of i : %d", i);
}

x = 0, y = 0
Array[0] = 0
Array[1] = 0
Array[2] = 0
The value of i : 1

#include <stdio.h>
#include <stdlib.h>
int main() {
   //The argument i will hold 1
   int index;
   int array[10] = {1, 2, 3, 4, 5, 6};
   for(index = 0; index < 10; index++)
      printf("Array[%d] = %d</p><p>", index, array[index]);
}

Array[0] = 1
Array[1] = 2
Array[2] = 3
Array[3] = 4
Array[4] = 5
Array[5] = 6
Array[6] = 0
Array[7] = 0
Array[8] = 0
Array[9] = 0