Having some issues with text formatting

[Xenos]

I'm currently working through the book Head First C and have gotten to a point where I am taking gps coordinates and converting them to JSON format and then putting them into a file. The issue I have run into is that running the program and directing the output to a file, or to the console, from a file cause strange formatting issues.

Here is the code so far:

#include <stdio.h>
#include <string.h>
int main()
{
    float latitude;
    float longitude;
    char info[80];
    int started = 0;
    puts("data=[");
    while (scanf("%f, %f, %79[^\n]", &latitude, &longitude, info) == 3)
    {
        if (started)
            printf(", \n");
        else
            started = 1;
        
        printf("{latitude: %f, longitude: %f, info: '%s'}", latitude, longitude, info);
    }
    puts("\n]");
    return 0;
}

This is the .csv file

42.363400,-71.098465,Speed = 21
42.363327,-71.097588,Speed = 23
42.363255,-71.096710,Speed = 17
42.363182,-71.095833,Speed = 22
42.363110,-71.094955,Speed = 14
42.363037,-71.094078,Speed = 16
42.362965,-71.093201,Speed = 18
42.362892,-71.092323,Speed = 22
42.362820,-71.091446,Speed = 17
42.362747,-71.090569,Speed = 23
42.362675,-71.089691,Speed = 14
42.362602,-71.088814,Speed = 19
42.362530,-71.087936,Speed = 16
42.362457,-71.087059,Speed = 16
42.362385,-71.086182,Speed = 21

The resulting .json file:

data=[
{latitude: 42.363400, longitude: -71.098465, info: 'Speed = 21
'}, 
{latitude: 42.363327, longitude: -71.097588, info: 'Speed = 23
'}, 
{latitude: 42.363255, longitude: -71.096710, info: 'Speed = 17
'}, 
{latitude: 42.363182, longitude: -71.095833, info: 'Speed = 22
'}, 
{latitude: 42.363110, longitude: -71.094955, info: 'Speed = 14
'}, 
{latitude: 42.363037, longitude: -71.094078, info: 'Speed = 16
'}, 
{latitude: 42.362965, longitude: -71.093201, info: 'Speed = 18
'}, 
{latitude: 42.362892, longitude: -71.092323, info: 'Speed = 22
'}, 
{latitude: 42.362820, longitude: -71.091446, info: 'Speed = 17
'}, 
{latitude: 42.362747, longitude: -71.090569, info: 'Speed = 23
'}, 
{latitude: 42.362675, longitude: -71.089691, info: 'Speed = 14
'}, 
{latitude: 42.362602, longitude: -71.088814, info: 'Speed = 19
'}, 
{latitude: 42.362530, longitude: -71.087936, info: 'Speed = 16
'}, 
{latitude: 42.362457, longitude: -71.087059, info: 'Speed = 16
'}, 
{latitude: 42.362385, longitude: -71.086182, info: 'Speed = 21
'}
]

If the program is redirected to the console:

data=[
'}, itude: 42.363400, longitude: -71.098465, info: 'Speed = 21
'}, itude: 42.363327, longitude: -71.097588, info: 'Speed = 23
'}, itude: 42.363255, longitude: -71.096710, info: 'Speed = 17
'}, itude: 42.363182, longitude: -71.095833, info: 'Speed = 22
'}, itude: 42.363110, longitude: -71.094955, info: 'Speed = 14
'}, itude: 42.363037, longitude: -71.094078, info: 'Speed = 16
'}, itude: 42.362965, longitude: -71.093201, info: 'Speed = 18
'}, itude: 42.362892, longitude: -71.092323, info: 'Speed = 22
'}, itude: 42.362820, longitude: -71.091446, info: 'Speed = 17
'}, itude: 42.362747, longitude: -71.090569, info: 'Speed = 23
'}, itude: 42.362675, longitude: -71.089691, info: 'Speed = 14
'}, itude: 42.362602, longitude: -71.088814, info: 'Speed = 19
'}, itude: 42.362530, longitude: -71.087936, info: 'Speed = 16
'}, itude: 42.362457, longitude: -71.087059, info: 'Speed = 16
'}atitude: 42.362385, longitude: -71.086182, info: 'Speed = 21
]

[laserlight]

I cannot replicate your output. Either way, I get:

data=[
{latitude: 42.363400, longitude: -71.098465, info: 'Speed = 21'}, 
{latitude: 42.363327, longitude: -71.097588, info: 'Speed = 23'}, 
{latitude: 42.363255, longitude: -71.096710, info: 'Speed = 17'}, 
{latitude: 42.363182, longitude: -71.095833, info: 'Speed = 22'}, 
{latitude: 42.363110, longitude: -71.094955, info: 'Speed = 14'}, 
{latitude: 42.363037, longitude: -71.094078, info: 'Speed = 16'}, 
{latitude: 42.362965, longitude: -71.093201, info: 'Speed = 18'}, 
{latitude: 42.362892, longitude: -71.092323, info: 'Speed = 22'}, 
{latitude: 42.362820, longitude: -71.091446, info: 'Speed = 17'}, 
{latitude: 42.362747, longitude: -71.090569, info: 'Speed = 23'}, 
{latitude: 42.362675, longitude: -71.089691, info: 'Speed = 14'}, 
{latitude: 42.362602, longitude: -71.088814, info: 'Speed = 19'}, 
{latitude: 42.362530, longitude: -71.087936, info: 'Speed = 16'}, 
{latitude: 42.362457, longitude: -71.087059, info: 'Speed = 16'}, 
{latitude: 42.362385, longitude: -71.086182, info: 'Speed = 21'}
]

which differs from both your sample outputs, and is what I expected.

[Xenos]

That's really weird. What OS are you using? I'm on Ubuntu 18.04.2

[Xenos]

I cannot replicate your output. Either way, I get:

data=[
{latitude: 42.363400, longitude: -71.098465, info: 'Speed = 21'}, 
{latitude: 42.363327, longitude: -71.097588, info: 'Speed = 23'}, 
{latitude: 42.363255, longitude: -71.096710, info: 'Speed = 17'}, 
{latitude: 42.363182, longitude: -71.095833, info: 'Speed = 22'}, 
{latitude: 42.363110, longitude: -71.094955, info: 'Speed = 14'}, 
{latitude: 42.363037, longitude: -71.094078, info: 'Speed = 16'}, 
{latitude: 42.362965, longitude: -71.093201, info: 'Speed = 18'}, 
{latitude: 42.362892, longitude: -71.092323, info: 'Speed = 22'}, 
{latitude: 42.362820, longitude: -71.091446, info: 'Speed = 17'}, 
{latitude: 42.362747, longitude: -71.090569, info: 'Speed = 23'}, 
{latitude: 42.362675, longitude: -71.089691, info: 'Speed = 14'}, 
{latitude: 42.362602, longitude: -71.088814, info: 'Speed = 19'}, 
{latitude: 42.362530, longitude: -71.087936, info: 'Speed = 16'}, 
{latitude: 42.362457, longitude: -71.087059, info: 'Speed = 16'}, 
{latitude: 42.362385, longitude: -71.086182, info: 'Speed = 21'}
]

which differs from both your sample outputs, and is what I expected.

I ended up getting this output after making the csv with a different text editor. I guess notepadd++ must be doing something weird with the text on Ubuntu. Thanks for making sure I wasn't accidentally doing something weird code-wise

[john.c]

Looks like it has Windows line endings, which are "\r\n".
Try

    while (scanf("%f, %f, %79[^\r\n]", &latitude, &longitude, info) == 3)

[Salem]

Did you copy your .csv file from windows?

Because it looks like the sort of thing that happens when you're not handling the '\r' character that Windows also uses for a newline.

Unix/Linux = \n
Dos/Windows = \r\n

[Xenos]

Looks like it has Windows line endings, which are "\r\n".
Try

    while (scanf("%f, %f, %79[^\r\n]", &latitude, &longitude, info) == 3)

That works! Thank you. I think I'm gonna have to use a different text editor though lol

[Xenos]

No, I copied it from firefox on Ubuntu. I guess that could still have an effect on it. I'm testing some stuff with notepad++ right now to see if copying from firefox could still have that effect and so far making the .csv file in notepad++ is producing the desired outcome so it must be from the copy.

<EDIT> I forgot to remove the \r from the scanf line it looks like notepad++ is using windows newline

[christop]

<EDIT> I forgot to remove the \r from the scanf line it looks like notepad++ is using windows newline

You can change the line ending of a file in Notepad++ by using the Edit/EOL Conversion menu (and then save the file after changing it).