One of the most common standard tasks is to implement a "cat program": read all of STDIN and print it to STDOUT. While this is named after the Unix shell utility cat.
Task
- You should write a full program which reads the contents of the standard input stream and writes them verbatim to the standard output stream.
- If and only if your language does not support standard input and/or output streams, you may instead take these terms to mean their closest equivalent in your language (e.g. JavaScript's prompt and and alert).
- The output should contain exactly the input and nothing else.
- This also applies to newlines.
Solutions
Jump to C, CSharp, JavaScript, PHP Solution.
You can submit your own solution in comment section in same/different programming language. If your solution is better or in different language we'll add here.
C
#include<stdio.h>
int main()
{
int i;
while(i=~getchar())
putchar(~i);
}
CSharp
using System;
namespace testcs
{
class Program
{
static void Main(string[] args)
{
for (;;System.Console.WriteLine(System.Console.In.ReadLine()));
}
}
}
JavaScript
<html>
<body>
<script>
for(;;alert(prompt()));
</script>
</body>
</html>
PHP
<? fpassthru(STDIN);
