Code:
#include
#include
#include
int main()
{
int i = 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 (i = 0;a[i] != '\0';i++) //loop to count no of words
{
if (a[i] = = ' ')
space++;
}
i = 0;
for (j = 0;j<(space + 1);i++, j++) //loop to store each word into an 2D array
{
k = 0;
while (a[i] != '\0')
{
if (a[i] == ' ')
{
break;
}
else
{
b[j][k++] = a[i];
i++;
}
}
b[j][k] = '\0';
}
i = 0;
strcpy(c[i], b[i]);
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 <= i;d++)
{
if (strcmp(c[i], b[e]) == 0)
break;
else
{
i++;
strcpy(c[i], b[e]);
break;
}
}
}
printf("\nNumber of unique words in %s are:%d", a, i);
return 0;
}
Output:
Read a string:
Welcome to C-programming class, Welcome again to C class!
The length of input string is:58
Number of unique words in Welcome to C-programming class, Welcome again to C class! are:7
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