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

21 votes159 views6 answers
Mkv to mp4
C
2 votes128 views2 answers
Curl authorization header
C
1 vote136 views1 answer
Get_session` is not available when using TensorFlow 2.0.
C
0 vote138 views1 answer
Example c programming language
C
0 vote121 views1 answer
C gettimeofday example
C
0 vote114 views1 answer
Calculate max of three numbers using ternary operator in c
C
1 vote156 views1 answer
How to slow voice speed in pyttsx3
C
1 vote126 views1 answer
Fseek function in c
C
0 vote118 views1 answer
C/c drop mime
C
-1 vote122 views1 answer
Prime factorization of factorials using c
C