Program to calculate the total number of words in the given text

#include<stdio.h>

#include<string.h>

int main()

{

    char a[20];

    int i,n,count=0;

    printf("Enter the text:");

    gets(a);

    n=strlen(a);

    for(i=0;i<=n;i++)

    {

        if(a[i]==' '||a[i]=='\0')

        count++;

    }

    printf("\nTotal number of words in the string is %d.",count);

    return 0;

}