How the Malloc () Can Be Used in C With an Example?

allocate memory c

By LeonardoA00 on Jun 16, 2020

// Use malloc to allocate memory
ptr = (castType*) malloc(size);
int *exampl = (int*) malloc(sizeof(int));
// Use calloc to allocate and inizialize n contiguous blocks of memory
ptr = (castType*) calloc(n, size);
char *exampl = (char*) calloc(20, sizeof(char));

Source: www.programiz.com

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malloc in c

By Thurger on Mar 03, 2020

#include <stdlib.h>

void *malloc(size_t size);

void exemple(void)
{
  char *string;
  
  string = malloc(sizeof(char) * 5);
  if (string == NULL)
    return;
  string[0] = 'H';
  string[1] = 'e';
  string[2] = 'y';
  string[3] = '!';
  string[4] = '\0';
  printf("%s\n", string);
  free(string);
}

/// output : "Hey!"

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malloc c

By Frightened Flamingo on Nov 13, 2020

int main(int argc, char *argv[])
{
    int* memoireAllouee = NULL;

    memoireAllouee = malloc(sizeof(int));
    if (memoireAllouee == NULL) // Si l'allocation a échoué
    {
        exit(0); // On arrête immédiatement le programme
    }

    // On peut continuer le programme normalement sinon

    return 0;
}

Source: openclassrooms.com

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how to use malloc in c

By Healthy Horse on Sep 22, 2020

int* a =(int*)malloc(sizeof(int))

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Malloc

By C on Jun 18, 2020

ptr = malloc(size); //You dont need to cast

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malloc in c

By Helpless Heron on Apr 27, 2021

int main(int argc, char *argv[])
{
    int* string = NULL;

    memoireAllouee = malloc(sizeof(int));
    if (string == NULL) 
    {
    	return;
   		string[0] = 'H';
        string[1] = 'e';
        string[2] = 'y';
        string[3] = '!';
        string[4] = '\0';
        printf("%s\n", string);
    }



    return 0;

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