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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. int main()
  5. {
  6.  
  7.     // This pointer will hold the
  8.     // base address of the block created
  9.     int* ptr;
  10.     int n, i;
  11.  
  12.     // Get the number of elements for the array
  13.     printf("Enter number of elements:");
  14.     scanf("%d",&n);
  15.     //n=70;
  16.     printf("Entered number of elements: %d\n", n);
  17.  
  18.     // Dynamically allocate memory using malloc()
  19.     ptr = (int*)malloc(n * sizeof(int));
  20.     ptr[0] = '\0';
  21.  
  22.     // Check if the memory has been successfully
  23.     // allocated by malloc or not
  24.     if (ptr == NULL) {
  25.         printf("Memory not allocated.\n");
  26.         exit(0);
  27.     }
  28.     else {
  29.  
  30.         // Memory has been successfully allocated
  31.         printf("Memory successfully allocated using malloc.\n");
  32.  
  33.         // Get the elements of the array
  34.         //for (i = 0; i < n; ++i) {
  35.         //    ptr[i] = i + 1;
  36.         //}
  37.  
  38.         // Print the elements of the array
  39.         printf("The elements of the array are: ");
  40.         for (i = 0; i < n; ++i) {
  41.             printf("[%d], ", ptr[i]);
  42.         }
  43.     }
  44.  
  45.     return 0;
  46. }
Success #stdin #stdout 0.01s 5288KB
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stdin
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5
stdout
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Enter number of elements:Entered number of elements: 5
Memory successfully allocated using malloc.
The elements of the array are: [0], [0], [0], [0], [0],
https://ideone.com/y4agv3
language:
C (gcc 8.3)
created:
6 days ago
visibility:
public

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