UVa 458 the Decoder (Minimalist code!) )

458-the Decoder

Time limit:3.000 seconds

Http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=94&page=show_problem &problem=399

Write a complete program that would correctly decode a set of characters into a valid message. Your program should read a given file of a simple coded set of characters and print the exact Contain. The code key for this simple coding are a one for one character substitution based upon a single arithmetic manipulatio n of the printable portion of the ASCII character set.

Input and Output

For Example:with the input file that contains:

1JKJ ' PZ ' {ol ' {yhklthyr ' vm ' {ol ' Jvu{yvs ' kh{h ' jvywvyh{pvu5
1PIT ' pz ' h ' {yhklthyr ' vm ' {ol ' PU{LYUH{PVUHS '] i| Zpulzz ' Thjopul ' jvywvyh{pvu5
1KLJ ' pz ' {ol ' {yhklthyr ' vm ' {ol ' kpnp{hs ' lx|pwtlu{'

Your program should print:

*CDC is the trademark's control Data Corporation.
*IBM is a trademark of the International Business Machine Corporation.
*dec is the trademark of the Digital equipment Corporation.

Your program should accept all sets of characters ' use ' same encoding scheme and should print the actual message of Each set of characters.

Sample Input

1JKJ ' PZ ' {ol ' {yhklthyr ' vm ' {ol ' Jvu{yvs ' kh{h ' jvywvyh{pvu5
1PIT ' pz ' h ' {yhklthyr ' vm ' {ol ' PU{LYUH{PVUHS '] i| Zpulzz ' Thjopul ' jvywvyh{pvu5
1KLJ ' pz ' {ol ' {yhklthyr ' vm ' {ol ' kpnp{hs ' lx|pwtlu{'

Sample Output

*CDC is the trademark's control Data Corporation.
*IBM is a trademark of the International Business Machine Corporation.
*dec is the trademark of the Digital equipment Corporation.

The sample tells you to subtract 7.

Complete code:

/*0.026s*/
  
#include <cstdio>
  
int main (void)
{
    char ch;
    while (~ (ch = getchar ()))
        Putchar (ch = = ' \ n '?) ' \ n ': ch-7);
    return 0;
}

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