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  1. #include <stdio.h>
  2. #include <conio.h>
  3. main(){
  4.    char roman[30];
  5.    int deci=0;
  6.    int length,i,d[30];
  7.    printf("The Roman equivalent to decimal
  8. ");
  9.    printf("Decimal:.........Roman
  10. ");
  11.    printf("%5d............%3c
  12. ",1,'I');
  13.    printf("%5d............%3c
  14. ",5,'V');
  15.    printf("%5d............%3c
  16. ",10,'X');
  17.    printf("%5d............%3c
  18. ",50,'L');
  19.    printf("%5d............%3c
  20. ",100,'C');
  21.    printf("%5d............%3c
  22. ",500,'D');
  23.    printf("%5d............%3c
  24. ",1000,'M');
  25.    printf("Enter a Roman numeral:");
  26.    scanf("%s",roman);
  27.    length=strlen(roman);
  28.    for(i=0;i<length;i++){
  29.       switch(roman[i]){
  30.          case 'm':
  31.          case 'M': d[i]=1000; break;
  32.          case 'd':
  33.          case 'D': d[i]= 500; break;
  34.          case 'c':
  35.          case 'C': d[i]= 100; break;
  36.          case 'l':
  37.          case 'L': d[i]= 50; break;
  38.          case 'x':
  39.          case 'X': d[i]= 10; break;;
  40.          case 'v':
  41.          case 'V': d[i]= 5; break;
  42.          case 'i':
  43.          case 'I': d[i]= 1;
  44.       }
  45.    }
  46.    for(i=0;i<length;i++){
  47.       if(i==length-1 || d[i]>=d[i+1])
  48.          deci += d[i];
  49.       else
  50.          deci -= d[i];
  51.    }
  52.    printf("The Decimal equivalent of Roman numeral %s is %d", roman, deci);
  53. }
Success #stdin #stdout #stderr 0.02s 6884KB
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Standard input is empty
stdout
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Standard output is empty
stderr
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ERROR: /home/mnvQyu/prog:53:0: Syntax error: end_of_file_in_quasi_quotation
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/pmB59S
language:
Prolog (swi 7.6.4)
created:
46 days ago
visibility:
public

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