Hello world/Line printer: Difference between revisions
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EZPF</syntaxhighlight>
===
As noted, null in the sense of zero cannot be used as a string terminator on EDSAC. However, it is possible to use the EDSAC null, whose 5-bit code is 10000. The subroutine below demonstrates this.
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=={{header|Wren}}==
It is not currently possible to communicate with the printer using Wren-cli. So we need to write a minimal embedded program (no error checking) so the C host can do this for us.
<syntaxhighlight lang="
class C {
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<br>
We now embed this in the following C program, compile and run it.
<syntaxhighlight lang="c">/* gcc
#include <stdio.h>
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WrenVM* vm = wrenNewVM(&config);
const char* module = "main";
const char* fileName = "
char *script = readFile(fileName);
WrenInterpretResult result = wrenInterpret(vm, module, script);
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