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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. int main() {
  5.     int *arr, n, i, x, count = 0;
  6.  
  7.     printf("Enter the size of the array: ");
  8.     scanf("%d", &n);
  9.  
  10.     arr = (int*) malloc(n * sizeof(int));
  11.     if (arr == NULL) {
  12.         printf("Memory allocation failed!\n");
  13.         return 1;
  14.     }
  15.  
  16.     printf("\nEnter %d integers:\n", n);
  17.     for (i = 0; i < n; i++) {
  18.         scanf("%d", &arr[i]);
  19.     }
  20.  
  21.     printf("\nEnter the value to delete: ");
  22.     scanf("%d", &x);
  23.  
  24.     // Remove all occurrences of x
  25.     for (i = 0; i < n; i++) {
  26.         if (arr[i] != x) {
  27.             arr[count++] = arr[i];   // overwrite deleted values
  28.         }
  29.     }
  30.  
  31.     // Resize array using realloc
  32.     arr = (int*) realloc(arr, count * sizeof(int));
  33.     if (arr == NULL && count > 0) {
  34.         printf("Memory reallocation failed!\n");
  35.         return 1;
  36.     }
  37.  
  38.     printf("\nNew size of array: %d\n", count);
  39.     printf("Updated array: ");
  40.     for (i = 0; i < count; i++) {
  41.         printf("%d ", arr[i]);
  42.     }
  43.  
  44.     free(arr);
  45.     printf("\n\nMemory freed successfully.\n");
  46.     return 0;
  47. }
  48.  
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin
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10
1
2
3
4
1
2
3
1
1
4
1
stdout
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Enter the size of the array: 
Enter 10 integers:

Enter the value to delete: 
New size of array: 6
Updated array: 2 3 4 2 3 4 

Memory freed successfully.
https://ideone.com/Z8govb
language:
C (clang 8.0)
created:
6 hours ago
visibility:
public

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