C Programming Code Examples
C > Strings Code Examples
C Program to Count the Number of Unique Words
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/* C Program to Count the Number of Unique Words */
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
int x = 0, e, j, d, k, space = 0;
char a[50], b[15][20], c[15][20];
printf("Read a string:\n");
fflush(stdin);
scanf("%[^\n]s", a);
for (x = 0;a[x] != '\0';x++) //loop to count no of words
{
if (a[x] = = ' ')
space++;
}
x = 0;
for (j = 0;j<(space + 1);x++, j++) //loop to store each word into an 2D array
{
k = 0;
while (a[x] != '\0')
{
if (a[x] == ' ')
{
break;
}
else
{
b[j][k++] = a[x];
x++;
}
}
b[j][k] = '\0';
}
x = 0;
strcpy(c[x], b[x]);
for (e = 1;e <= j;e++) //loop to check whether the string is already present in the 2D array or not
{
for (d = 0;d <= x;d++)
{
if (strcmp(c[x], b[e]) == 0)
break;
else
{
x++;
strcpy(c[x], b[e]);
break;
}
}
}
printf("\nNumber of unique words in %s are:%d", a, x);
return 0;
}
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