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A shorthand array notation in C for repeated values

In C, when there are many repeated values, we can use a shorthand array notation to define array. Below program demonstrates same.

// C program to demonstrate working of shorthand
// array rotation.
#include <stdio.h>
  
int main()
{
    // This line is same as
    // int array[10] = {1, 1, 1, 1, 0, 0, 2, 2, 2, 2};
    int array[10] = {[0 ... 3]1, [6 ... 9]2};
  
    for (int i = 0; i < 10; i++)
        printf("%d ", array[i]);
    return 0;
}

Output:

1 1 1 1 0 0 2 2 2 2 

Note that middle gap of 2 is automatically filled with 0.

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This article is attributed to GeeksforGeeks.org

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C c-array C

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