ILE C/C++ Programmer's Guide
The ILE C compiler recognizes source code written in any single-byte EBCDIC
CCSID (Coded Character Set Identifier) except CCSID 290, 905 and 1026.
See Chapter 31, Internationalizing a Program for information on CCSIDs.
Some characters from the C and C++ character set are not available in all
environments. You can enter these characters into a C or C++ source
program using a sequence of three characters called a trigraph.
- Note:
- For more information about using trigraph sequences, see WebSphere Development Studio: ILE C/C++ Language
Reference.
The C compiler also supports digraphs. (The C++ compiler does not
support digraphs.)
Figure 2. ILE C Source to Add Integers and Print Characters
/* This program reads input from the terminal, displays characters, */
/* and sums and prints the digits. Enter a "+" character to */
/* indicate EOF (end-of-file). */
#define MAXLEN 60 /* The maximum input line size. */
#include <stdio.h>
#include <ctype.h>
void main(void)
{
int c;
int i = 0, j = 0;
int sum = 0;
int count, cnt;
int num[MAXLEN]; /* An array of digits. */
char letter??(MAXLEN??); /* An array of characters. Trigraphs
replace the square brackets. */
while ( ( c = getchar( ) ) != '+' )
{
if ( isalpha ( c ) ) /* A test for an alphabetic */
{ /* character. */
letter[i++] = c;
}
else if ( isdigit ( c ) ) /* A test for a decimal digit. */
{
num??(j++??) = c - '0'; /* Trigraphs replace the square
brackets. */
}
}
printf ( "Characters are " );
for ( count = 0; count < i; ++count )
{
printf ( "%c", letter[count] );
}
printf( "\nSum of Digits is " );
for ( cnt = 0; cnt < j; ++cnt )
{
sum += num[cnt];
}
printf ( "%d\n", sum );
}
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