fork download 
  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. int main(void) {
  4.  
  5.    int **p;
  6.    int *arr,i;
  7.    p= malloc(sizeof(int *));        // allocate memory for 1 int 8*
  8.    p[0]=malloc(5*sizeof(int));      // allocate memory to int *
  9.    for(i = 0; i < 5; i++){
  10.         p[0][i] = i+1;             // initialization
  11.      }      
  12.   arr= malloc(5 * sizeof(int));        // allocate memory to arr
  13.   memcpy(arr,&p[0][2],3*sizeof(int));  // copy last 3 elements to arr
  14.  
  15.   for( i=0;i<3;i++){              
  16.      printf("%d",arr[i]);              // print value in arr
  17.    }
  18.   free(p[0]);
  19.   free(p);
  20.   free(arr);
  21.  
  22. 	return 0;
  23. }
  24.  
Success #stdin #stdout 0s 2244KB
comments (?)
stdin 
Standard input is empty
stdout 
345
https://ideone.com/EWXTgb
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!