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 vote168 views1 answer
Eslint error 'require' is not defined
C
0 vote176 views1 answer
Command line coursera
C
2 votes179 views1 answer
Unity 2d movement and animation
C
0 vote166 views1 answer
How to make a check bigger
C
0 vote165 views1 answer
How to merge 2 bytes into an integer
C
7 votes278 views5 answers
Sleep function in c
C
-1 vote170 views1 answer
Queryfailederror: invalid input syntax for type uuid:
C
0 vote156 views1 answer
Calculate max of three numbers using ternary operator in c
C
0 vote173 views1 answer
Perl file handling
C
0 vote215 views1 answer
Run steam as root
C