C Program to Count Number of Words in a String

C program to count a number of words in a string; Through this tutorial, we will learn how to count number of words in a given string using for loop, while loop, and function in c program.

Programs to Count Number of Words in a String in C

Let’s use the following programs to count number of words in a given string using for loop, while loop, and function in c:

• C Program to Count Number of Words in a String using for loop
• C Program to Count Number of Words in a String using while loop
• C Program to Count Number of Words in a String using function

C Program to Count Number of Words in a String using for loop

/* C Program to Count Total Number of Words in a String */

#include <stdio.h>
#include <string.h>

int main()
{
  	char str[100];
  	int i, totalwords;
  	totalwords = 1;

  	printf("\n Please Enter any String :  ");
  	gets(str);

  	for(i = 0; str[i] != '\0'; i++)
	{
		if(str[i] == ' ' || str[i] == '\n' || str[i] == '\t')
		{
			totalwords++;
		}
	}
	printf("\n The Total Number of Words in this String %s  = %d", str, totalwords);

  	return 0;
}

The output of the above c program; as follows:

Please Enter any String :  hello developer
The Total Number of Words in this String hello developer  = 2

C Program to Count Number of Words in a String using while loop

/* C Program to Count Total Number of Words in a String */

#include <stdio.h>
#include <string.h>

int main()
{
  	char str[100];
  	int i, totalwords;
  	totalwords = 1;
  	i = 0;

  	printf("\n Please Enter any String :  ");
  	gets(str);

  	while(str[i] != '\0')
	{
		if(str[i] == ' ' || str[i] == '\n' || str[i] == '\t')
		{
			totalwords++;
		}
		i++;
	}
	printf("\n The Total Number of Words in this String %s  = %d", str, totalwords);

  	return 0;
}

The output of the above c program; as follows:

Please Enter any String :  hy dud
The Total Number of Words in this String hy dud  = 2

C Program to Count Number of Words in a String using function

/* C Program to Count Total Number of Words in a String */

#include <stdio.h>
#include <string.h>

int Count_TotalWords(char *str);

int main()
{
  	char str[100];
  	int totalwords;
  	totalwords = 1;

  	printf("\n Please Enter any String :  ");
  	gets(str);

  	totalwords = Count_TotalWords(str);

	printf("\n The Total Number of Words in this String %s  = %d", str, totalwords);

  	return 0;
}

int Count_TotalWords(char *str)
{
	int i, totalwords;
  	totalwords = 1;

	for(i = 0; str[i] != '\0'; i++)
	{
		if(str[i] == ' ' || str[i] == '\n' || str[i] == '\t')
		{
			totalwords++;
		}
	}
	return totalwords;
}

The output of the above c program; as follows:

Please Enter any String :  hello dear sir
The Total Number of Words in this String hello dear sir  = 3

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