How do you use sscanf() in C file handling?

Answer 1

You can find in-depth information on how to use sscanf() in C file handling on crasseux.com/books/ctutorial/sscanf.html

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Answer 2

sscanf () function is a function that can be found in library. sscanf () will extract a string (or character array) and distribute the values to different variables. sscanf () will only stop scanning a value when it scanned spaces, new line, or a different datatype.

sscanf ([string], "[format specifiers]", ...[Variables where the values will be distributed]);

Example:

char strNew [99] = "Hello World 64";

char strHello [99];

char strWorld [99];

int num;

sscanf (strNew, " %s %s %d", strHello, strWorld, num);

With the example above, after the execution of the program, strHello's value would be "Hello"; strWorld's value would be "World" and num's value is 64.

If you only want a specific value in a string and you want to remove the other values, you can use asterisk (*) after the percent sign to stop scanning that value. In the example above, for example, I only need the number 64. Therefore:

sscanf (strNew, "%*s %*s %d", &num);