Format specifier for sscanf() in C Post: 303040623

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Top Forums Programming Format specifier for sscanf() in C Post 303040623 by yifangt on Saturday 2nd of November 2019 08:35:57 AM

11-02-2019

Registered User

Format specifier for sscanf() in C

Hello, I have formatted lines delimited by colon ":", and I need to parse the line into two parts with sscanf() with format specifiers.
infile.txt:

Code:

Sample Name: sample1
SNPs                         : 91
MNPs                         : 1
Insertions                   : 5
Deletions                    : 2
Indels                       : 0
Same as reference            : 1
Missing Genotype             : 44
SNP Transitions/Transversions: 1.74 (73/42)
Total Het/Hom ratio          : 2.96 (74/25)

And here is my code fragment:

Code:

char line[256];     //for row read from file
char name[32];      //1st part (key part) parsed from each line[]
char str1[8];       //2nd part (value part) parsed from each line[]

sscanf(line, "%[^:] : %s", name, str1);      //scan in two halves delimited by ":", in the 2nd half, only take the first part delimited by space/tab
                                             //e.g. line1: Sample Name-> name; sample1 -> str1 
                                             //line10: Total Het/Hom ratio -> name; 2.96-> str1,  discard (74/25)

There may not be space/tab before or after the colon. Ignoring the float/integer data type for numbers at this moment.
For each line I could not get the first half to name, and the first part after ":" into str1. The problem is sscanf() does not stop at the end of each line. Spent some time reading the manpage of sscanf() and my old post, could not figure it out myself.
What is wrong with my sscanf() line? Thanks a lot.

Last edited by yifangt; 11-02-2019 at 01:54 PM.. Reason: typo and add color

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set_color

set_color(1)							       fish							      set_color(1)

NAME

       set_color - set_color - set the terminal color

set_color - set the terminal color
   Synopsis
       set_color [-v --version] [-h --help] [-b --background COLOR] [COLOR]

   Description
       Change the foreground and/or background color of the terminal. COLOR is one of black, red, green, brown, yellow, blue, magenta, purple,
       cyan, white and normal.

       o -b, --background Set the background color

       o -c, --print-colors Prints a list of all valid color names

       o -h, --help Display help message and exit

       o -o, --bold Set bold or extra bright mode

       o -u, --underline Set underlined mode

       o -v, --version Display version and exit

       Calling set_color normal will set the terminal color to whatever is the default color of the terminal.

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       Not all terminal emulators support all these features. This is not a bug in set_color but a missing feature in the terminal emulator.

       set_color uses the terminfo database to look up how to change terminal colors on whatever terminal is in use. Some systems have old and
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Version 1.23.1							  Sun Jan 8 2012						      set_color(1)