String counter

#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#define MAX 100

int strcount(char* strA, char* strB);
int doubleCheck(char* strA, char* strB);

int main(void)
{
  char*A = (char*)malloc(sizeof(char)*100);
  char*B = (char*)malloc(sizeof(char)*10);
    for(int i = 0; i < MAX; i++)
    {
      A[i] ='\0';
    }
  if(malloc == NULL)
  {
    printf("Error allocating memory");
    exit(1);
  }

  //A = "The friends of Ringo Ishikawa";
  //char*B = "Ringo Ishikawa";
  printf("Please enter your first string.");
  fgets(A, MAX, stdin);
  printf("Please enter your second string.");
  fgets(B, MAX, stdin);
  strcount(A, B);

  free(A);
  free(B);
  return 0;
}

int strcount(char* strA, char* strB)
{
  int count = 0;
  char* ptr;
  char* loc = malloc(sizeof(char*)*100);
  char*A = ptr;
  char*B = strB;

  for(ptr = strA; *ptr!= '\0'; *(ptr++))
  {
    if((loc=strstr(ptr, strB)) != NULL)
    {
      if(*ptr == *strB)
      {
        if(doubleCheck(ptr, strB) == 1)
            count++;
      }
    }
  }
  printf("\nThe amount of times that %s appears in %s is %d", strB, strA, count);
  free(loc);
}

int doubleCheck(char* strA, char* strB)
{
  int ccount = 0;
  printf("\nThe strings being compared are %s and %s", strA, strB);

  for(int i = 0; i < strlen(strB); i++)
  {
    if(strA[i] == strB[i]){
      ccount++;
    }else
      break;
  }
  if(ccount == strlen(strB))
    return 1;
  else
    return 0;
}