Solved

line 26: Parse Error, expecting `NUMBER'

Posted on 2004-10-06
10
407 Views
Last Modified: 2010-04-15
I am trying to figure where my error is coming from.  This program is supposed to give the equivalents of five currencies in USD.  Here is the code:

#include <stdio.h>
main ()
{
      float ad;
      float cd;
      float dk;
      float nk;
      float tb;
      
      int ans;
      
      do
      {
            printf("***** CURRENCY CONVERTER *****");
            printf("1 - Australian Dollars \n");
            printf("2 - Canadian Dollars \n");
            printf("3 - Danish Krone \n");
            printf("4 - Norwegian Kroner \n");
            printf("5 - Thai Bhat \n\n");
            scanf(" %d", &ans);
      }
            while ((ans!='1')&&(ans!='2')&&(ans!='3')&&
                   (ans!='4')&&(ans!='5'));
      switch (ans)
      {
            case ('1') : {ad = 1.38274;
                        printf("\n The equivalent in US Dollars is %.2f", ad);
                        break;}
            case ('2') : {cd = 1.2629;
                        printf("\n The equivalent in US Dollars is %.2f", cd);
                        break;}
            case ('3') : {dk = 6.001;
                        printf("\n The equivalent in US Dollars is %.2f", dk);
                        break;}
            case ('4') : {nk = 6.692;
                        printf("\n The equivalent is US Dollars is %.2f", nk);
                        break;}
            case ('5') : {tb = 41.36;
                        printf("\n The equivalent is US Dollars is %.2f", tb);
                        break;}
      }
      getch();
      return;  
}
0
Comment
Question by:JJ7717
10 Comments
 
LVL 45

Expert Comment

by:Kent Olsen
ID: 12243287


The code isn't particularly well structured, and that's probably leading to the "hiding" of this problem.

Take the ';' off of the while() statement.  You're probably seeing an "infinite loop" and this is the reason.


Good Luck,
Kent
0
 
LVL 5

Expert Comment

by:lwinkenb
ID: 12243427
Couple notes:

main should be declared as either
int main() or int main(int argc, char **argv)

Also you variable ans is declared as an int.  Therefore in your while loop you should not be comparing it against characters.  For instance, it should be while(ans != 1) not while(ans != '1').
Also you while loop is pretty worthless as it stand since it is considered empty.  The structure of a while loop should be:
while(condition)
{
//...
}

You while loop currently looks like:
while(condition);


0
 
LVL 5

Expert Comment

by:libin_v
ID: 12245415
Since there is a 'do' statement preceding the while I do think the ';' is neccessary
0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 
LVL 9

Accepted Solution

by:
ankuratvb earned 125 total points
ID: 12245489
Do-While requires a semi-colon at the end of while.

The problem is the quotes surrounding the integer values 1-5;

Your while statement should be something like:

while ((ans!=1)&&(ans!=2)&&(ans!=3)&&
                (ans!=4)&&(ans!=5));
   
Similarly,remove the single quotes from the case statements as well.

case 1:

case 2:

etc.
0
 
LVL 16

Expert Comment

by:PaulCaswell
ID: 12246507
My compiler says to use:

     double ad;
     double cd;
     double dk;
     double nk;
     double tb;

...

Paul
0
 
LVL 12

Expert Comment

by:stefan73
ID: 12246875
Hi Kdo,
> The code isn't particularly well structured

Good point.
JJ7717, you have a lot of redundancy here. Think about using an array of structs instead:

struct currency{
    char* name;
    char* short_name;
    double rate;
}

then you can define all your currencies nicely:

struct currency all_currencies[]={
    {"Australian Dollar", "AUD", 1.38274},
    {"Euro", "EUR", 0.85345435},
};

...now you should know how to proceed: Loop to print the choices, do the appropriate calculations, etc.

Cheers!

Stefan
0
 

Author Comment

by:JJ7717
ID: 12248307
Thanks to everyone who commented on my problem.  I will put together the suggestions and retool my program.

John
0
 

Expert Comment

by:x25
ID: 12265658
The parse error you have is particularly because of the LPAREN `(' character found after the case keyword. The compiler interprets the value after the `case' as a number. And, hence, the Left parentheses you have is unexpected for the compiler.

When you enclose a digit number between single quotes in the case statement like (case '2': ), this is perfectly legal. However, their actual value is not 2 but actually the ASCII code number for the character 2, which is in fact  50. Which can be very misleading and "hidden" in your program.


0

Featured Post

Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
SQL Statment to match two tables in c# 6 80
Problem in finding output of a program 11 106
C++ vs C compilers 13 160
How do I set up two external hard drives with Acronis True Image? 12 95
This tutorial is posted by Aaron Wojnowski, administrator at SDKExpert.net.  To view more iPhone tutorials, visit www.sdkexpert.net. This is a very simple tutorial on finding the user's current location easily. In this tutorial, you will learn ho…
Windows programmers of the C/C++ variety, how many of you realise that since Window 9x Microsoft has been lying to you about what constitutes Unicode (http://en.wikipedia.org/wiki/Unicode)? They will have you believe that Unicode requires you to use…
The goal of this video is to provide viewers with basic examples to understand and use pointers in the C programming language.
Video by: Grant
The goal of this video is to provide viewers with basic examples to understand and use while-loops in the C programming language.

829 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question