Commit 6e1b7b2

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Add getopt_long example code

Signed-off-by: Seungha Son <seungha.son@samsung.com>

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	`1`	`+#include <stdio.h>`
	`2`	`+#include <unistd.h>`
	`3`	`+#include <getopt.h>`
	`4`	`+`
	`5`	`+static const char *optstring = "o:hv";`
	`6`	`+`
	`7`	`+static const struct option long_options[] = {`
	`8`	`+ { "out", required_argument, NULL, 'o' },`
	`9`	`+ { "help", no_argument, NULL, 'h' },`
	`10`	`+ { "version", no_argument, NULL, 'v' },`
	`11`	`+ { NULL, 0, NULL, 0 }`
	`12`	`+};`
	`13`	`+`
	`14`	`+int main(int argc, char *argv[])`
	`15`	`+{`
	`16`	`+ char optc;`
	`17`	`+`
	`18`	`+ while ((optc = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {`
	`19`	`+ switch (optc) {`
	`20`	`+ case 'o':`
	`21`	`+ printf("out argument : %s\n", optarg);`
	`22`	`+ break;`
	`23`	`+ case 'h':`
	`24`	`+ printf("help");`
	`25`	`+ break;`
	`26`	`+ case 'v':`
	`27`	`+ printf("version");`
	`28`	`+ break;`
	`29`	`+ default:`
	`30`	`+ break;`
	`31`	`+ }`
	`32`	`+ }`
	`33`	`+`
	`34`	`+ return 0;`
	`35`	`+}`

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