---
name: "entrigraph"
section: "1"
platform: "linux"
package: "liwc"
version: "1.21-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/entrigraph"
---

# entrigraph(1)

convert C source code to use trigraphs

## NAME

entrigraph - convert C source code to use trigraphs

## SYNOPSIS

entrigraph \[file ...\]

## DESCRIPTION

This program converts a C program to use trigraphs. A trigraph is a three character sequence that encodes a single character. A trigraph begins with two question marks. The third character is \`/' (the trigraph means \`\\'), '(' (\`\['),  ')' (\`\]'),  '\<' (\`{'),  '\>' (\`}'),  '!' (\`\|'),  ''' (\`^'),  '-' (\`~'),  '=' (\`/'), or '/' (\`\\').

## SEE ALSO

[untrigraph(1)](/untrigraph/1.md)

## AUTHOR

Lars Wirzenius, liw@iki.fi.