PROGRAMMING FOR PROBLEM SOLVING LAB : Program 40

Write a C program to count the lines, words and characters in a given text.

Algorithm:

 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 of words
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

 

PROGRAM

#include <stdio.h>
int main()
{
    char str[100];//input string with size 100
    int words=0,newline=0,characters=0; // counter variables
    printf("ENTER STRING   AND PRESS ~ \n");
    scanf("%[^~]",&str);//scanf formatting    
    for(int i=0;str[i]!='\0';i++)
     { 
         if(str[i] == ' ')
         { 
              words++;
         }
         else if(str[i] == '\n')
         {
             newline++;
              words++;//since with every next line new words start. 
         }
         else if(str[i] != ' ' && str[i] != '\n')
         {
         characters++;
         }
     }
    if(characters > 0)
    {
        words++;
        newline++;
    }
     printf("Total number of words : %d\n",words);
     printf("Total number of lines : %d\n",newline);
     printf("Total number of characters : %d\n",characters);
    return 0;
}

OUTPUT:

ENTER STRING AND PRESS ~ 
hello
this is c
programm~
Total number of words : 5
Total number of lines : 3
Total number of characters : 20