What is sscanf used for?

The sscanf() function reads data from buffer into the locations that are given by argument-list . Each argument must be a pointer to a variable with a type that corresponds to a type specifier in the format-string . The sscanf() function returns the number of fields that were successfully converted and assigned.

What is the difference between scanf and sscanf?

scanf reads from the standard input stream stdin. fscanf reads from the named input stream. sscanf reads from the character string s. Each function reads characters, interprets them according to a format, and stores the results in its arguments.

Which is the correct syntax of sscanf?

The sscanf() function allows us to read formatted data from a string rather than standard input or keyboard. Its syntax is as follows: Syntax: int sscanf(const char *str, const char * control_string [ arg_1, arg_2, ]); The first argument is a pointer to the string from where we want to read the data.

What does the s stand for in sscanf ( )?

The scanf () function returns a number equal to the number of the number of fields that were successfully assigned values The sscanf () function works the same, it just takes it’s input from the supplied buffer argument ( s in this case ).

What’s the use of “% D ” in scanf?

The * is used to skip an input without putting it in any variable. So scanf (“%*d %d”, &i); would read two integers and put the second one in i. The value that was output in your code is just the value that was in the uninitialized i variable – the scanf call didn’t change it.

What are scanf ( “% * s “, & I ) format identifiers?

So scanf (“%*d %d”, &i); would read two integers and put the second one in i. The value that was output in your code is just the value that was in the uninitialized i variable – the scanf call didn’t change it. In scanf (“%*d”,&a) * skips the input. In order to read the inputs one has to use an extra “%d” in scanf.

How to store the result of the sscanf function?

For each format specifier in the format string that retrieves data, an additional argument should be specified. If you want to store the result of a sscanf operation on a regular variable you should precede its identifier with the reference operator, i.e. an ampersand sign (&), like: int n; sscanf (str,”%d”,&n);