Allocate memory block: how to use malloc


#include <stdio.h>
#include <stdlib.h>

int main ()
{
  int i, n;
  char *str;

  printf ("String Length? ");
  scanf ("%d", &i);

  str = (char*) malloc (i+1);
  if (str == NULL) 
      exit (1);

  for ( n = 0; n < i; n++)
      str[n] = rand() % 26 + 'a';
  
  str[i] = '\0';

  printf ("Random string: %s\n", str);
  free (str);

  return 0;
}

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Allocate memory block: how to use malloc : Memory Allocation « Memory « C / ANSI-C

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