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

1 vote321 views1 answer
Parcourir char c
C
0 vote188 views1 answer
Printing out 2 strings in c
C
1 vote198 views1 answer
What is the usage of extern in c
C
1 vote198 views1 answer
C program structure
C
1 vote206 views1 answer
Material ui Roboto Font
C
0 vote199 views1 answer
Magic Square matrix
C
0 vote215 views1 answer
How to change file permissions in C language
C
1 vote204 views1 answer
Adb switch to usb
C
12 votes252 views5 answers
C char to int
C
1 vote205 views2 answers
Sdl draw Rectf
C