A.2.184.1 Values (Sun Studio 12 Update 1: C++ User's Guide)

Sun Studio 12 Update 1: C++ User's Guide

You can specify one of the following two values for -xtrigraphs:

Table A–51 The -xtrigraphs Values


Value	Meaning
`yes`	Enables recognition of trigraph sequences throughout the compilation unit
`no`	Disables recognition of trigraph sequences throughout the compilation unit

When you do not include the -xtrigraphs option on the command line, the compiler assumes -xtrigraphs=yes.

If only -xtrigraphs is specified, the compiler assumes -xtrigraphs=yes.

Consider the following example source file named trigraphs_demo.cc.

#include <stdio.h>

int main ()
{
    (void) printf("(\?\?) in a string appears as (??)\n");
    return 0;
}

Here is the output if you compile this code with -xtrigraphs=yes.

example% CC -xtrigraphs=yes trigraphs_demo.cc
example% a.out
(??) in a string appears as (]

Here is the output if you compile this code with -xtrigraphs=no.

example% CC -xtrigraphs=no trigraphs_demo.cc
example% a.out
(??) in a string appears as (??)