In this program we have to count the no of lines, no of words and no of characters in a given program or given text by using the string function
Step 1: Start
Step 2: Read the text until an empty line
Step 3: Compare each character with newline char ‘\n’ to count no of lines
Step 4: Compare each character with tab char ‘\t\’ or space char ‘ ‘ to count no
Step 5: Compare first character with NULL char ‘\0’ to find the end of text
Step 6: No of characters = length of each line of text
Step 7: Print no of lines, no of words, no of chars
Step 8: Stop
char line, ctr;
end = 0,
characters = 0,
words = 0,
lines = 0;
printf("KEY IN THE TEXT.\n");
printf("GIVE ONE SPACE AFTER EACH WORD.\n");
printf("WHEN COMPLETED, PRESS 'RETURN'.\n\n");
while( end == 0)
/* Reading a line of text */
c = 0;
while((ctr=getchar()) != '\n')
line[c++] = ctr;
line[c] = '\0';
/* counting the words in a line */
if(line == '\0')
for(i=0; line[i] != '\0';i++)
if(line[i] == ' ' || line[i] == '\t')
/* counting lines and characters */
lines = lines +1;
characters = characters + strlen(line);
printf("Number of lines = %d\n", lines);
printf("Number of words = %d\n", words);
printf("Number of characters = %d\n", characters);
1.KEY IN THE TEXT.
GIVE ONE SPACE AFTER EACH WORD.
WHEN COMPLETED, PRESS 'RETURN'.
Admiration is a very short-lived passion.
Admiration involves a glorious obliquity of vision.
Always we like those who admire us but we do not
like those whom we admire.
Fools admire, but men of sense approve.
Number of lines = 5
Number of words = 36
Number of characters = 205
Conclusion: The program is error free
1) What is use of strlen() ?
Ans: to read a string length
2) what is the use of getc() function ?
Ans: To read the character one by one.
3) What is the use of strstr () ?
Ans: The function strstr() searches one string for the occurrence of another.It accepts
two strings as parameters and searches the first string for an occurrence of the