URI Solution 1234 solution - Dancing Sentence

URI Online Judge | 1234

Dancing Sentence

By TopCoder*  USA

Timelimit: 1

A sentence is called dancing if its first letter is uppercase and the case of each subsequent letter is the opposite of the previous letter. Spaces should be ignored when determining the case of a letter. For example, "A b Cd" is a dancing sentence because the first letter ('A') is uppercase, the next letter ('b') is lowercase, the next letter ('C') is uppercase, and the next letter ('d') is lowercase.

Input

The input contains several test cases. Each test case is composed by one line that contais a string sentence. This string will contain between 1 and 50 characters ('A'-'Z','a'-'z' or space ' '), inclusive, or at least, one letter ('A'-'Z','a'-'z').

Output

Turn the sentence into a dancing sentence (like following examples) by changing the cases of the letters where necessary. All spaces in the original sentence must be preserved, ie, " sentence " must be converted in " SeNtEnCe ".

Sample Input	Sample Output
This is a dancing sentence   This   is         a  dancing   sentence  aaaaaaaaaaa z	ThIs Is A dAnCiNg SeNtEnCe   ThIs   Is         A  dAnCiNg   SeNtEnCe  AaAaAaAaAaA Z

* This problem is of autorship and property of TopCoder (www.topcoder.com/tc) and adapted by Neilor for authorized use in URI OJ.
* Unauthorized reproduction of this problem statement without the prior written consent of TopCoder, Inc. is strictly prohibited.

URI Solution 1234 solution - Dancing Sentence in C++ Language

#include <iostream>

#include <ctype.h>

using namespace std;

 

int main()

{

    string line;

    int ch;

 

    while(getline(cin, line))

    {

        ch = 0;

 

        for (int i = 0; i < line.size(); ++i)

        {

            if(line[i] != ' '){

                if(ch == 0){

                    ch = 1;

                    putchar(toupper(line[i]));

                }else{

                    ch = 0;

                    putchar(tolower(line[i]));

                }  

            }else{

                cout << " ";

            }

        }

        cout << endl;

    }

 

    return 0;

}




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