c - How to send elements of the structure to switch -

currently parsing command line arguments in c program, , learn you, how in best way, below have attached source code, program processes input looking

wae0500 /f1.txt /d; comment1 comment2

the result

• debug:1
• help:0
• file_used:1
• read:0
• write:1

when flags received, work 2 conditions: either write or read, switch between fields of structure, code below wrong know, hope understand goal:

switch(flags){    case(flags.write):     // smth      break;    case(flags.write):     // smth      break; } 

and here complete program

#include <stdio.h> #include <string.h> #include <stdlib.h> typedef enum { false, true } bool;  typedef struct   {     bool debug;     bool help;     bool file_used;     bool read;     bool write; }flags;  void parse_input(flags *flag, int argc, char *argv[], char *file_name);  int main(int argc, char *argv[]) {      flags flag = { 0,0,0,0,0 };     flags *flag_ptr = &flag;      char file_name[96];      parse_input(&flag, argc, argv, file_name);       return 0; } void parse_input(flags *flag, int argc, char *argv[], char *file_name) {      int = 1; int j = 0;     char cur_ch;     while (i != argc) {          cur_ch = argv[i][j];          switch (cur_ch) {         case 'w':             flag->write = true;             break;         case'r':             flag->read = true;             break;         case '/':             j++;             cur_ch = argv[i][j];             switch (cur_ch) {             case 'd':                 flag->debug = true;                 break;             case 'f':                 flag->file_used = true;                 if (argv[i][j + 1] != ' ')                     strcpy(file_name, &argv[i][j + 1]);                 break;             case 'h':                 flag->help = true;                 break;             default:                 printf("bad argument: %s\n", argv[i]);             }              break;         case ';': // stop while             = argc - 1;             break;         default:             printf("bad argument: %s\n", argv[i]);         }         i++;     } } 

such option can temporary solution, learn how correctly

char command_type = '\0'; if (flag.write)     command_type = 'w'; else if(flag.read)     command_type = 'r'; switch (command_type) {     case 'w':         //do smth         break;     case 'r':         //do smth         break; } 

upd2:

enum flagtype { read, write, file_used, debug, };   struct s {    flagtype type;    union {      // write in union?;    };  };