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C > Strings Code Examples

C program to count number of words in a string

C program to count number of words in a string

Write a C program to count total number of words in a string using loop. How to find total number of words in a given string using loops in C programming.

To count total number of words in a string we just need to count total number of white spaces. White space characters includes single blank space ' ', Tab \t, New line \n.

Algorithm to find total number of words in a string

%%Input : text {Array of characters /String}
        N {Size of the string}
Begin:
    words = 0;
    For j = 0 to N do
        If (text [j] == ' ', 't', 'n') then
            word = word + 1;
        End if
    End for
End

#include <stdio.h>
#define maxsize 100 // Maximum string size

int main()
{
    char str[maxsize];
    int j, words;

    /* Input string from user */
    printf("Enter any string: ");
    gets(str);

    j = 0;
    words = 1;

    /* Runs a loop till end of string */
    while(str[j] != '\0')
    {
        /* If the current character(str[j]) is white space */
        if(str[j]==' ' || str[j]=='\n' || str[j]=='\t')
        {
            words++;
        }

        j++;
    }

    printf("Total number of words = %d", words);

    return 0;
}

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