getopt.c

/*******************************************
* Author     : Diego Cordoba / @d1cor      *
* Purpose    : juncotic.com - JuncoTIC     *
* Contact    : diego@juncotic.com          *
*******************************************/

#include<stdio.h>
#include<stdlib.h>
#include<sys/types.h>
#include<sys/stat.h>
#include<unistd.h>
#include<dirent.h>
#include<fcntl.h>
#include<errno.h>
int main(int argc, char** argv) {

    int i=0;
    char c;
    opterr=0;
    printf("Cantidad de argumentos: %d\n",argc);

    for(i=0;i<argc;i++){
        printf("(%d)---> %s\n",i,*(argv+i));
    }

    while((c=getopt(argc, argv, "abc:"))!=-1){
        switch(c){
        case 'a':
            printf("Un caracter 'a'\n");
            break;
        case 'b':
            printf("Un caracter 'b'\n");
            break;
        case 'c':
            printf("Un caracter 'c' con argumento %s\n",optarg);
            break;
        default:
            printf("Error de lectura\n");
        }
    }

    return 0;
}