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C Program to Count Number of Words in a string

robaa
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2022-11-24
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Write a C Program to Count Number of Words in a string. Here’s simple C Program to Count Number of Words in a string in C Programming Language.

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robaa
2022-11-24
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C – Strings : 

Strings are actually one-dimensional array of characters terminated by a null character ‘\0’. Thus a null-terminated string contains the characters that comprise the string followed by a null.

 
 

String is a sequence of characters. char data type is used to represent one single character in C. So if you want to use a string in your program then you can use an array of characters.

The declaration and definition of the string using an array of chars is similar to declaration and definition of an array of any other data type.

Any string ends with a terminating null character ‘\0’. An array definition in such a way should include null character ‘\0’ as the last element.

 

Here is source code of the C Program to Count Number of Words in a string. The C program is successfully compiled and run(on Codeblocks) on a Windows system. The program output is also shown in below.

SOURCE CODE : :

/*  C Program to Count Number of Words in a string  */

#include<stdio.h>
#define FALSE 0
#define TRUE  1

int main()
{
        int wc=0,flag =FALSE,i=0;
    char str[30];
    printf("\nEnter a string :: ");
        gets(str);
    while (str[i]!='\0')
    {
        // If next character is a separator, set the flag to false
        if (str[i] == ' ' || str[i] == '\n' || str[i] == '\t')
            flag = FALSE;

        /* If next character is not a separator and flag is false,
        then set the flag as TRUE and increment word count */
        else if (flag == FALSE)
        {
            flag = TRUE;
            ++wc;
        }

        // increment i for moving the curser to next character
        ++i;
    }

        printf("\nNo. of words in string [ %s ] is: [ %d ]\n",str,wc);
        return 0;

}

OUTPUT : :

/*  C Program to Count Number of Words in a string  */

Enter a string :: Codez CLub

No. of words in string [ Codez CLub ] is: [ 2 ]

Process returned 0

Above is the source code for C Program to Count Number of Words in a string which is successfully compiled and run on Windows System.The Output of the program is shown above .

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