Description

In this problem we simulate a simple text editor. Given a series of keyboard input, output the final text content.
The text editing rules are defined as following:
1. Normal alphabetical input and whitespace input (abcdefg…. and ‘ ‘) directly write  after the cursor of the text content.
And four special commands started with a backslash(/) character
2. The backspace command which deletes a letter before the cursor (/backspace)
3. The newline command which creates a new line after the cursor (/newline)
4. The two navigating commands which move the cursor (/left /right)

The size of the text content is fixed to 500 characters, and the text content of testcases will not exceed 500 characters when simulating.

Hint:

#include 

#define MAX_SIZE 500

char content[MAX_SIZE];
char input[MAX_SIZE];

int main()
{

    fgets(input, MAX_SIZE, stdin);

    /* your code here */

    printf("%s", content);

    return 0;
}

Input

The keyboard input sequence.
There is always a valid command(/backspace /newline /left /right) right after the backslash character.
There is no newline character at the end

Output

The final text content.
 

Sample Input  Download

Sample Output  Download

Tags

Discuss