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#include <stdlib.h> /* Provides exit */
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#include <stdio.h> /* Provides printf, scanf, sscanf */
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#include <unistd.h> /* Provides isatty */
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#include "io_frontend.h"
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int ISATTY;
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/* Standard Input procedures **************/
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_Bool _get_bool(char* n){
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   char b[512];
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   int r = 0;
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   int s = 1;
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   char c;
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   do {
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      if(ISATTY) {
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         if((s != 1)||(r == -1)) printf("\a");
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         printf("%s (1,t,T/0,f,F) ? ", n);
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      }
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      if(scanf("%s", b)==EOF) exit(0);
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      s = sscanf(b, "%c", &c);
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      r = -1;
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      if((c == '0') || (c == 'f') || (c == 'F')) r = 0;
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      if((c == '1') || (c == 't') || (c == 'T')) r = 1;
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   } while((s != 1) || (r == -1));
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   return (_Bool)r;
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}
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int _get_int(char* n){
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   char b[512];
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   int r;
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   int s = 1;
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   do {
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      if(ISATTY) {
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         if(s != 1) printf("\a");
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         printf("%s (integer) ? ", n);
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      }
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      if(scanf("%s", b)==EOF) exit(0);
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      s = sscanf(b, "%d", &r);
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   } while(s != 1);
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   return r;
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}
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double _get_double(char* n){
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   char b[512];
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   double r;
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   int s = 1;
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   do {
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      if(ISATTY) {
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         if(s != 1) printf("\a");
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         printf("%s (double) ? ", n);
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      }
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      if(scanf("%s", b)==EOF) exit(0);
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      s = sscanf(b, "%lf", &r);
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   } while(s != 1);
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   return r;
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}
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/* Standard Output procedures **************/
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void _put_bool(char* n, _Bool _V){
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  if(ISATTY) {
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    printf("%s = ", n);
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  } else {
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    printf("'%s': ", n);
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  };
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  printf("'%i' ", (_V)? 1 : 0);
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  printf("\n");
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}
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void _put_int(char* n, int _V){
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  if(ISATTY) {
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    printf("%s = ", n);
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  } else {
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    printf("'%s': ", n);
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  };
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  printf("'%d' ", _V);
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  printf("\n");
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}
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void _put_float(char* n, float _V, int PREC){
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  if(ISATTY) {
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    printf("%s = ", n);
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  } else {
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    printf("'%s': ", n);
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  };
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  printf("'%.*f' ", PREC, _V);
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  printf("\n");
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}
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void _put_double(char* n, double _V, int PREC){
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  if(ISATTY) {
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    printf("%s = ", n);
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  } else {
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    printf("'%s': ", n);
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  };
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  printf("'%.*f' ", PREC, _V);
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  printf("\n");
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}
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