Malloc basics

// Program to calculate the sum of n numbers entered by the user

#include <stdio.h>
#include <stdlib.h>

int main() {
  int n, i, *ptr, sum = 0;

  printf("Enter number of elements: ");
  scanf("%d", &n);

  ptr = (int*) malloc(n * sizeof(int));
 
  // if memory cannot be allocated
  if(ptr == NULL) {
    printf("Error! memory not allocated.");
    exit(0);
  }

  printf("Enter elements: ");
  for(i = 0; i < n; ++i) {
    scanf("%d", ptr + i);
    sum += *(ptr + i);
  }

  printf("Sum = %d", sum);
  
  // deallocating the memory
  free(ptr);

  return 0;
}

Source: programiz.com

Similar codes

0 vote238 views1 answer
Printing out 2 strings in c
C
0 vote251 views1 answer
Remix icon cdn
C
-2 votes225 views1 answer
Split string at space C
C
0 vote227 views1 answer
Uri/beecrowd problem no - 1131 solution in C
C
17 votes230 views2 answers
What is chocolatey
C
6 votes234 views2 answers
C check if file exists
C
4 votes246 views3 answers
Strcasecmp c
C
0 vote281 views1 answer
Bcd to char c
C
1 vote242 views1 answer
How to print the address of a pointer in c
C
23 votes230 views3 answers
Picasso
C