Microchip Technology SW006022-2N Data Sheet

 2012 Microchip Technology Inc.

DS52071B-page 25

The following topics describe how the CCI refines the implementation-defined 
behaviors outlined in the ANSI C Standard.

Under the CCI, a source file must be written using characters from the 7-bit ASCII set. 
Lines may be terminated using a line feed ('\n') or carriage return ('\r') that is immedi-
ately followed by a line feed. Escaped characters may be used in character constants 
or string literals to represent extended characters not in the basic character set.

2.4.1.1

EXAMPLE

The following shows a string constant being defined that uses escaped characters.

const char myName[] = "Bj\370rk\n";

2.4.1.2

DIFFERENCES

All compilers have used this character set.

2.4.1.3

MIGRATION TO THE CCI

No action required.

The prototype for the main() function is

int main(void);

2.4.2.1

EXAMPLE

The following shows an example of how main() might be defined

int main(void)

{

while(1)

process();

}

2.4.2.2

DIFFERENCES

The 8-bit compilers used a void return type for this function.

2.4.2.3

MIGRATION TO THE CCI

Each program has one definition for the main() function. Confirm the return type for 
main()

 in all projects previously compiled for 8-bit targets.

Header file specifications that use directory separators do not conform to the CCI.

2.4.3.1

EXAMPLE

The following example shows two conforming include directives.

#include <usb_main.h>

#include "global.h"