c99 - Any way to to include original parameters in fscanf in C -

i'm trying see if when do

fscanf(inputstream, "$%s$", out)  

i can return $ signs - there way?

i don't think there's way retrieve string dollar signs , non-blank string between them using scanf() family of functions. closest approach using scanset, scansets not same regular expressions, , you'd need regular expression specify pattern looking for.

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in practice, first dollar sign string using:

fscanf(inputstream, " %1[$]%[^$]%*[$]", &out[0], &out[1]); 

you can't pull same stunt latter dollar sign, if know exact length of string. trouble you'd need overwrite null @ end of string second dollar sign, , you'd want nul '\0' after string. adding final dollar easier inserting first @ beginning of string. third scanset contains assignment-suppressing '*' , requires dollar @ end. leading space in format skips spaces.

this isn't guaranteed behaviour; first conversion write nul on out[1], , second conversion write string on out[1], c standard not guarantee work.

#include <stdio.h> int main(void) {     char out[20];      scanf(" %1[$]%[^$]%*[$]", &out[0], &out[1]);     printf("<<%s>>\n", out);     return 0; }