Print the last character of each word in a string

introduce

C strings are essentially a combination of words used as a storage unit to contain alphanumeric data. The words in a string are associated with the following properties −

• The position of the word starts from 0.

• Every word is associated with a different length.

• The characters combine together to form words, which eventually form sentences.

• By default, words are separated by space characters.

• Every word contains at least one character.

In this article, we will develop a code that takes a string as input and displays the last character of each word in that string. Let us see the following example to understand this topic better -

Sample Example

Example 1−

str − “Key word of a string”
Output − y d f a g

For example, in the fourth word of this string, only one character appears, so this is the last character of the string.

In this post, we will develop a piece of code that uses the indexing operator to extract the last character of each word and then access the previous character individually.

Syntax

str.length()

length()

length()

In C, the length() method is used to count the number of characters in a string. It works in linear order of strings.

Algorithm

• An input string, str is accepted.

• The length of the string is computed using the length() method and stored in len variable.

• An iteration of the string is performed, using the for loop i.

• Each time the character at ith position is extracted, stored in variable ch

• If this character is equivalent to the last index of the string, that is len-1, it is displayed.

• If this character is equal to the space character, the i-1th index character is displayed because it is the last character of the previous word.

Example

The following C code snippet accepts a sample string as input and counts the last character of each word in the string -

//including the required libraries
#include<bits/stdc++.h>
using namespace std;
//compute last characters of a string 
void  wordlastchar(string str) {
   // getting length of the string 
   int len = str.length();
   for (int i = 0; i <len ; i++) {
      char ch = str[i];
     
      //last word of the string
      if (i == len - 1)
         cout<<ch;
 
      //if a space is encountered, marks the start of new word 
      if (ch == ' ') {
         //print the previous character of the last word 
           
          char lst = str[i-1];
          cout<<lst<<" ";
       }
    }
}
 
//calling the method
int main() {
   //taking a sample string 
   string str = "Programming at TutorialsPoint";
   cout<<"Input String : "<< str <<"\n"; 
   //getfirstandlast characters
   cout<<"Last words of each word in a string : \n";
   wordlastchar(str);
}

Output

Input String : Programming at TutorialsPoint
Last words of each word in a string : 
g t t

Conclusion

In C, in the sentence format of strings, all words are separated by space characters. Each word of the string consists of uppercase and lowercase characters. It is easy to extract these characters and operate on them using the corresponding index.

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