Beginner's Problem

This is a discussion on Beginner's Problem within the C Programming forums, part of the General Programming Boards category; I'm a novice C programmer using the Ubuntu terminal to compile. As in, I just started today. The compiler keeps ...

  1. #1
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    Beginner's Problem

    I'm a novice C programmer using the Ubuntu terminal to compile. As in, I just started today. The compiler keeps coming up with this:

    Variable1.c: In function 'main':
    Variable1.c:9:46: error: expected ')' before string constant

    I checked all over for mismatched parentheses. Here is the code.
    Code:
    #include <stdio.h>
    
    int main()
    {
      int this_is_a_number;
    
      printf ( "Please enter a number: " );
      scanf ( "%d", &this_is_a_number );
      printf ( "You entered %d", this_is_a_number"\n" );
      getchar();
      if ( this_is_a_number==1 ){
        printf ( "Correct! \n");
      }
      else {
        printf ( "Incorrect.  Press enter to be exited from the program. \n");
      }
      getchar();
      return 0;
    }
    Any ideas on what is wrong? I am a beginner, so it's probably something fundamental that I missed.

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    By the way, this is just experimental. There is absolutely no purpose to this program than a learning experience.

  3. #3
    Registered User joybanerjee39's Avatar
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    Quote Originally Posted by Gigabitten View Post
    I'm a novice C programmer using the Ubuntu terminal to compile. As in, I just started today. The compiler keeps coming up with this:

    Variable1.c: In function 'main':
    Variable1.c:9:46: error: expected ')' before string constant

    I checked all over for mismatched parentheses. Here is the code.
    Code:
    #include <stdio.h>
    
    int main()
    {
      int this_is_a_number;
    
      printf ( "Please enter a number: " );
      scanf ( "%d", &this_is_a_number );
      printf ( "You entered %d", this_is_a_number"\n" );
      getchar();
      if ( this_is_a_number==1 ){
        printf ( "Correct! \n");
      }
      else {
        printf ( "Incorrect.  Press enter to be exited from the program. \n");
      }
      getchar();
      return 0;
    }
    Any ideas on what is wrong? I am a beginner, so it's probably something fundamental that I missed.
    the problem is in this statement->
    printf ( "You entered %d", this_is_a_number"\n" );
    Last edited by joybanerjee39; 11-25-2011 at 11:47 PM.

  4. #4
    Team Bring It rajarshi's Avatar
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    Quote Originally Posted by Gigabitten View Post
    By the way, this is just experimental. There is absolutely no purpose to this program than a learning experience.
    replace line 9 with
    Code:
    printf( "You entered %d \n", this_is_a_number);

    " I failed in some subjects in exam , but my friend passed in all . Now he is an engineer in Microsoft and I am the owner of Microsoft !! "

    - Bill Gates .

  5. #5
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    character and integer problem

    hey giga i am a beginner too just been into c for about a month now i think the problem with the code is the fact that you declared and integer and used 'getchar' which is for characters to collect an integer.
    i have not ran the code yet i may be try scanf and see what happens

  6. #6
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    The problem was what ragarshi stated....include the '\n' in the quotation marks after the %d and it'd work.

  7. #7
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    Quote Originally Posted by Nyah Check View Post
    hey giga i am a beginner too just been into c for about a month now i think the problem with the code is the fact that you declared and integer and used 'getchar' which is for characters to collect an integer.
    i have not ran the code yet i may be try scanf and see what happens
    You need to go and look up the return value from getchar() ....

  8. #8
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    Such a simple syntax error...thanks, guys! I was amazed at how fast the answer came!

  9. #9
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    Understand what the error means though. The "\n" is a string constant, and the compiler can only work with 1 variable in that part of the printf() code. There is no format in the format section, for another variable of any kind - it expects the closing parenthesis: ) (and semi-colon)

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