c - Ignore space or newline when reading a line -


i'm reading line till enter/return pressed(like terminal), have problems when comes ignoring space(s) , enter(s).

this how read , check space/new line/comment:

char line[256]; while(printf("%s>", shell_name) && scanf(" %50[^\n]", line) != eof){         if(isspace(*line) == 0 && line[0] != '#' && line[0] != '\n'){

input example:

mysh>echo lol lol mysh> *spaces* mysh> mysh> *next line(enter)* mysh>

the " " in scanf(" %50[^\n]", line) consumes leading whites-space (including '\n'), not leading spaces.

isspace(*line) == 0 , line[0] != '\n' true.

suggest fgets()/sscanf(). user input far easier handle first getting line , then 2) parsing it.

char buf[256]; if (fgets(buf, sizeof buf, stdin) == null) handleeof(); char line[256]; if (sscanf(buf, " %50[^\n]", line) < 1) handle_whitespaceonlyline(); goodtogo();

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