zig/example/hello_world/hello_libc.zig

const c = @cImport({
    // See https://github.com/ziglang/zig/issues/515
    @cDefine("_NO_CRT_STDIO_INLINE", "1");
    @cInclude("stdio.h");
    @cInclude("string.h");
});

const msg = c"Hello, world!\n";

export fn main(argc: c_int, argv: &&u8) c_int {
    if (c.printf(msg) != c_int(c.strlen(msg)))
        return -1;

    return 0;
}
update hello world examples edge cases matter See #510 2017-10-02 00:40:30 +08:00			`const c = @cImport({`
update github.com/zig-lang to github.com/ziglang 2018-05-25 09:27:44 +08:00			`// See https://github.com/ziglang/zig/issues/515`
support linking against MSVC libc 2017-10-02 09:05:08 +08:00			`@cDefine("_NO_CRT_STDIO_INLINE", "1");`
update hello world examples edge cases matter See #510 2017-10-02 00:40:30 +08:00			`@cInclude("stdio.h");`
			`@cInclude("string.h");`
			`});`

			`const msg = c"Hello, world!\n";`
std: print_str no longer requires length argument add explicit casting support from array to string 2015-12-12 17:05:08 +08:00
syntax: functions require return type. remove `->` The purpose of this is: * Only one way to do things * Changing a function with void return type to return a possible error becomes a 1 character change, subtly encouraging people to use errors. See #632 Here are some imperfect sed commands for performing this update: remove arrow: ``` sed -i 's/\(\bfn\b.\)-> /\1/g' $(find . -name ".zig") ``` add void: ``` sed -i 's/\(\bfn\b.\))\s{/\1) void {/g' $(find ../ -name "*.zig") ``` Some cleanup may be necessary, but this should do the bulk of the work. 2018-01-25 17:10:11 +08:00			`export fn main(argc: c_int, argv: &&u8) c_int {`
update hello world examples edge cases matter See #510 2017-10-02 00:40:30 +08:00			`if (c.printf(msg) != c_int(c.strlen(msg)))`
			`return -1;`

when linking with libc use the C runtime library 2015-12-16 03:44:42 +08:00			`return 0;`
std: print_str no longer requires length argument add explicit casting support from array to string 2015-12-12 17:05:08 +08:00			`}`