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blissfullydysphoric

Wed Nov 05, 2008 8:47 pm


Trying to parse a string....

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Hi, I'm trying to take a 10 digit number and take its individual parts... So I take the number as a string and I am trying to get each character in the string to go into an integer array using the atoi() command but it gives me an error on the line that i use the atoi....


#include 

#include 
#include 

int main(void) 

{

    int isbn[10];
    char array1[10];
    int i;
    int temp;

    printf( "Please enter the ISBN number:\n" );
    scanf("%s",array1);
    puts(array1);
    isbn=atoi(array1);
    printf("%d",isbn[0]);
    printf("\n");

    return 0;

}




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md

Wed Nov 05, 2008 8:52 pm


RE:Trying to parse a string....

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Look up the documentation on atoi, but basically you are trying to use it to do something it doesn't do.

atoi returns an integer, not an array of integers.


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blissfullydysphoric

Wed Nov 05, 2008 8:55 pm


Re: Trying to parse a string....

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ok thanks.... I can get it to put all of the string into one integer but not an array..... do you have any other suggestions on how to do this?


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OneOffDriveByPoster

Wed Nov 05, 2008 9:48 pm


Re: Trying to parse a string....

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ok thanks.... I can get it to put all of the string into one integer but not an array..... do you have any other suggestions on how to do this?You did say a 10 digit number.  Did you try 2147483648?  Why are you using atoi()?  Do you have to?  Standard C says that the characters '0' to '9' are consecutive values.  That can help.


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md

Thu Nov 06, 2008 12:21 am


RE:Trying to parse a string....

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If your goal is to copy each digit of the number into a different position in an integer array then teh simple way is to set integer_array[i] to character_array[i] - '0'

Why that is and how to use it to your advantage I leave to you.


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blissfullydysphoric

Thu Nov 06, 2008 3:19 pm


RE:Trying to parse a string....

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@md
Thanks that helped alot... I tried the subtract zero thing before but i guess I needed the ' ' around it.