count no. of words

 //read words from file

#include<stdio.h>

int main()

{

    char str[20];

    char word[100];

    int count=0;

    printf("Enter the file name: ");

    scanf("%s",str);

    FILE *fp=fopen(str,"r");

    if(fp==NULL)

    {

        printf("Error in opening the file");

    }

    else

    {

        while(fscanf(fp,"%s", word)==1)

        {

            count++;

        }

    }

    printf("Number of words in the text file is : %d",count);

}