I am going through one small code where I need to take whole line as input through scanf function, and I think there is one format specifier "[^\n%*c]" can someone please tell me syntax for it and how it works?
2 Answers
The best way is probably to use fgets.
char str[20];
fgets(str, 20, stdin);
printf("%s", str);
No reason to use scanf here. Just remember that fgets also puts the newline character in the buffer. It can be removed like this:
str[strcspn(str, "\n")] = 0;
Comments
#include <stdio.h>
int main()
{
char str[20];
scanf("%19[^\n]%*c", str);
printf("%s\n", str);
return 0;
}
fgetsif you want to read whole lines, it's much simpler (and assuming correct arguments won't lead to buffer overflows).int result = scanf(" %99[^\n]", string);where 99 is the string size -1, and it leaves the newline in the input buffer. The leading space before%is to consume previous whitespace. Theresultis the number of successful conversions. It is generally poor practice to try to eat subsequent whitespace.scanf()is not the proper tool for the job. It can do it, just like an hammer can be used to drive a screw in :-)