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What is the difference between “char a” and “char a[1]”?
  • Difficulty Level : Basic
  • Last Updated : 08 May, 2017

Question Source: Aricent Interview

Although both expressions can be used to create a variable to store one character, there are following differences.

1) “char a” represents a character variable and “char a[1]” represents a char array of size 1.

2) If we print value of char a, we get ASCII value of the character (if %d is used). And if we print value of char a[1], we get address of the only element in array.

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#include <stdio.h>
  
int main ()
{
  char a1 = 'A';
  char a2[1] = {'A'};
  printf("%d  %d", a1, a2);
  return 0;
}

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Output:

65
An address

This article is contributed by Abhishek. Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.

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