C malloc

Malloc in c

#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!"

C malloc

#include <stdlib.h>
int main(){
int *ptr;
ptr = malloc(15 * sizeof(*ptr)); /* a block of 15 integers */
    if (ptr != NULL) {
      *(ptr + 5) = 480; /* assign 480 to sixth integer */
      printf("Value of the 6th integer is %d",*(ptr + 5));
    }
}

Source: guru99.com

C malloc

Example: ptr = (int *) malloc (50)

Source: guru99.com

C malloc

ptr = (cast_type *) malloc (byte_size);

Source: guru99.com

What is the use of malloc in c

In C, the library function malloc is used to allocate a block of memory on the heap. The program accesses this block of memory via a pointer that malloc returns. When the memory is no longer needed, the pointer is passed to free which deallocates the memory so that it can be used for other purposes.

Malloc in c

// Let's allocate enough space on the heap for an array storing 4 ints

intArray = (int *) malloc(4 * sizeof(int)); // A pointer to an array of ints

intArray[0] = 10;
intArray[1] = 20;
intArray[2] = 25;
intArray[3] = 35;

Similar codes

0 vote324 views1 answer
Hello world in c programming language
C
0 vote311 views1 answer
Inserting array
C
0 vote312 views1 answer
Boilerplate c
C
1 vote322 views1 answer
Dynamic 2d arr in c
C
0 vote321 views1 answer
How to turn off zsh
C
1 vote314 views1 answer
How to print the address of a pointer in c
C
0 vote317 views2 answers
Short print variable in c
C
0 vote339 views1 answer
Subrayar elementos css
C
39 votes835 views4 answers
Celsius to fahrenheit formula
C
0 vote310 views1 answer
Worst case algorithm
C