Stdlib h C Tutorial

Item Value
Header filestdlib.h
Declarationvoid *malloc(size_t size);
Returnreturns a pointer to the memory. If there is insufficient memory, malloc() returns a null pointer.
It is important to verify that the return value is not null before using it.
Allocate sufficient memory to hold structures of type addr:

#include
  struct addr {
    char name[40];
    char street[40];
    char city[40];
    char state[3];
    char zip[10];
  };
  main()
  {
    struct addr *p;
    p = malloc(sizeof(struct addr));
    if(p==NULL) {
      printf("Allocation Error\n");
      exit(1);
    }
    return p;
  }