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C | Advanced Pointer | Question 10

  • Difficulty Level : Medium
  • Last Updated : 28 Jun, 2021

Output of following program

#include <stdio.h>
int fun(int arr[]) {
   arr = arr+1;    
   printf("%d ", arr[0]);
int main(void) {
   int arr[2] = {10, 20};
   printf("%d", arr[0]);
   return 0;

(A) Compiler Error
(B) 20 10
(C) 20 20
(D) 10 10

Answer: (B)

Explanation: In C, array parameters are treated as pointers (See for details).

So the variable arr represents an array in main(), but a pointer in fun().

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